diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0b2c004..f99604b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,7 +9,9 @@ using the [Keep a CHANGELOG](https://keepachangelog.com/) principles.
 
 - Add new **resx** storage format to support Windows applications.
 - Add new **Docker Image** for PHPUnuhi to run it in a container without installing in your project
-- Add new version specific XSD files in the schema folder for upcoming releases 
+- Add new version specific XSD files in the schema folder for upcoming releases
+- Include new error hints for missing and empty keys, particularly when the base language may also lack the same translation. In such cases, this could be an expected behavior.
+- Add base locale indicator in terminal output of errors (next to the locale name).
 
 ## [1.22.0]
 
diff --git a/src/Commands/ValidateSimilarityCommand.php b/src/Commands/ValidateSimilarityCommand.php
index e425319..b2bea84 100644
--- a/src/Commands/ValidateSimilarityCommand.php
+++ b/src/Commands/ValidateSimilarityCommand.php
@@ -147,7 +147,7 @@ private function buildTestValidation(array $pair, Locale $locale): ValidationTes
 
         return new ValidationTest(
             $key1,
-            $locale->getName(),
+            $locale,
             'Test Similarity',
             '',
             0,
diff --git a/src/Components/Validator/CaseStyleValidator.php b/src/Components/Validator/CaseStyleValidator.php
index ca846aa..ef99032 100644
--- a/src/Components/Validator/CaseStyleValidator.php
+++ b/src/Components/Validator/CaseStyleValidator.php
@@ -95,7 +95,7 @@ public function validate(TranslationSet $set, StorageInterface $storage): Valida
 
                     $tests[] = new ValidationTest(
                         $translation->getKey(),
-                        $locale->getName(),
+                        $locale,
                         "Test case-style of key '" . $translation->getKey() . "' to be one of: " . $allowedCaseStylesText,
                         $locale->getFilename(),
                         $locale->findLineNumber($translation->getKey()),
diff --git a/src/Components/Validator/EmptyContentValidator.php b/src/Components/Validator/EmptyContentValidator.php
index 2de11d2..e8e0cec 100644
--- a/src/Components/Validator/EmptyContentValidator.php
+++ b/src/Components/Validator/EmptyContentValidator.php
@@ -8,6 +8,7 @@
 use PHPUnuhi\Components\Validator\EmptyContent\AllowEmptyContent;
 use PHPUnuhi\Components\Validator\Model\ValidationResult;
 use PHPUnuhi\Components\Validator\Model\ValidationTest;
+use PHPUnuhi\Exceptions\TranslationNotFoundException;
 use PHPUnuhi\Models\Translation\Locale;
 use PHPUnuhi\Models\Translation\Translation;
 use PHPUnuhi\Models\Translation\TranslationSet;
@@ -29,7 +30,6 @@ public function __construct(array $allowList)
     }
 
 
-
     public function getTypeIdentifier(): string
     {
         return 'EMPTY_CONTENT';
@@ -40,12 +40,22 @@ public function validate(TranslationSet $set, StorageInterface $storage): Valida
     {
         $tests = [];
 
+        # first search if we have a base locale
+        $baseLocale = null;
+
+        foreach ($set->getLocales() as $locale) {
+            if ($locale->isBase()) {
+                $baseLocale = $locale;
+                break;
+            }
+        }
+
         foreach ($set->getLocales() as $locale) {
             foreach ($locale->getTranslations() as $translation) {
                 $testPassed = !$translation->isEmpty();
+                $baseLocaleWarning = false;
 
                 if (!$testPassed) {
-
                     # check if we have an allow list entry
                     foreach ($this->allowList as $allowEntry) {
                         if ($allowEntry->getKey() === $translation->getKey() && $allowEntry->isLocaleAllowed($locale->getName())) {
@@ -55,13 +65,29 @@ public function validate(TranslationSet $set, StorageInterface $storage): Valida
                     }
                 }
 
+
+                # we haven't the required key in our current locale
+                # let's figure out if we have a base locale and if it's also missing there
+                # if so, then let the user know
+                if (!$testPassed && ($baseLocale instanceof Locale && $locale->getName() !== $baseLocale->getName())) {
+                    try {
+                        $baseLocaleTranslation = $baseLocale->findTranslation($translation->getKey());
+
+                        # if this is empty, then we also want to warn, that the base local is also empty
+                        # and that it might be just fine...
+                        $baseLocaleWarning = $baseLocaleTranslation->isEmpty();
+                    } catch (TranslationNotFoundException $e) {
+                        $baseLocaleWarning = true;
+                    }
+                }
+
                 if ($translation->getGroup() !== '') {
                     $identifier = $translation->getGroup() . ' (group) => ' . $translation->getKey();
                 } else {
                     $identifier = $translation->getID();
                 }
 
-                $tests[] = $this->buildValidationTest($identifier, $locale, $translation, $testPassed);
+                $tests[] = $this->buildValidationTest($identifier, $locale, $translation, $baseLocaleWarning, $testPassed);
             }
         }
 
@@ -69,16 +95,26 @@ public function validate(TranslationSet $set, StorageInterface $storage): Valida
     }
 
 
-    private function buildValidationTest(string $identifier, Locale $locale, Translation $translation, bool $testPassed): ValidationTest
+    private function buildValidationTest(string $identifier, Locale $locale, Translation $translation, bool $baseLocaleDeprecationInfo, bool $testPassed): ValidationTest
     {
+        $suffix = '';
+
+        if ($baseLocaleDeprecationInfo) {
+            $suffix = ' (your base locale is also missing this translation. Maybe this is an expected behavior?)';
+        }
+
+        if ($locale->isBase()) {
+            $suffix = ' (this is a base locale. Maybe this is an expected behavior?)';
+        }
+
         return new ValidationTest(
             $identifier,
-            $locale->getName(),
+            $locale,
             'Test existing translation for key: ' . $translation->getKey(),
             $locale->getFilename(),
             $locale->findLineNumber($translation->getKey()),
             $this->getTypeIdentifier(),
-            'Translation for key ' . $translation->getKey() . ' does not have a value',
+            'Translation for key ' . $translation->getKey() . ' does not have a value.' . $suffix,
             $testPassed
         );
     }
diff --git a/src/Components/Validator/MissingStructureValidator.php b/src/Components/Validator/MissingStructureValidator.php
index a57e469..de01d92 100644
--- a/src/Components/Validator/MissingStructureValidator.php
+++ b/src/Components/Validator/MissingStructureValidator.php
@@ -7,6 +7,7 @@
 use PHPUnuhi\Bundles\Storage\StorageInterface;
 use PHPUnuhi\Components\Validator\Model\ValidationResult;
 use PHPUnuhi\Components\Validator\Model\ValidationTest;
+use PHPUnuhi\Exceptions\TranslationNotFoundException;
 use PHPUnuhi\Models\Translation\Locale;
 use PHPUnuhi\Models\Translation\TranslationSet;
 
@@ -24,6 +25,16 @@ public function validate(TranslationSet $set, StorageInterface $storage): Valida
 
         $tests = [];
 
+        # first search if we have a base locale
+        $baseLocale = null;
+
+        foreach ($set->getLocales() as $locale) {
+            if ($locale->isBase()) {
+                $baseLocale = $locale;
+                break;
+            }
+        }
+
         foreach ($set->getLocales() as $locale) {
             $localeKeys = $locale->getTranslationIDs();
 
@@ -31,19 +42,30 @@ public function validate(TranslationSet $set, StorageInterface $storage): Valida
             # as our global suite keys list
             $structureValid = $this->isStructureEqual($localeKeys, $allKeys);
 
-
             $same = $this->getSame($localeKeys, $allKeys);
 
             if (!$structureValid) {
                 $filtered = $this->getDiff($localeKeys, $allKeys);
 
                 foreach ($filtered as $key) {
-                    $tests[] = $this->buildValidationTest($key, $locale, false);
+                    $baseLocaleWarning = false;
+
+                    # we haven't the required key in our current locale
+                    # let's figure out if we have a base locale and if it's also missing there
+                    # if so, then let the user know
+                    if ($baseLocale instanceof Locale && $locale->getName() !== $baseLocale->getName()) {
+                        try {
+                            $baseLocale->findTranslation($key);
+                        } catch (TranslationNotFoundException $e) {
+                            $baseLocaleWarning = true;
+                        }
+                    }
+                    $tests[] = $this->buildValidationTest($key, $locale, $baseLocaleWarning, false);
                 }
             }
 
             foreach ($same as $key) {
-                $tests[] = $this->buildValidationTest($key, $locale, true);
+                $tests[] = $this->buildValidationTest($key, $locale, false, true);
             }
         }
 
@@ -89,16 +111,26 @@ private function getSame(array $a, array $b): array
     }
 
 
-    private function buildValidationTest(string $key, Locale $locale, bool $success): ValidationTest
+    private function buildValidationTest(string $key, Locale $locale, bool $baseLocaleDeprecationInfo, bool $success): ValidationTest
     {
+        $suffix = '';
+
+        if ($baseLocaleDeprecationInfo) {
+            $suffix = ' (your base locale is also missing this key. Maybe this is an expected behavior?)';
+        }
+
+        if ($locale->isBase()) {
+            $suffix = ' (this is a base locale. Maybe this is an expected behavior?)';
+        }
+
         return new ValidationTest(
             $key,
-            $locale->getName(),
+            $locale,
             'Test structure of key: ' . $key,
             $locale->getFilename(),
             $locale->findLineNumber($key),
             $this->getTypeIdentifier(),
-            'Found missing structure in locale. Key is missing: ' . $key,
+            'Found missing structure in locale. Key is missing: ' . $key . $suffix,
             $success
         );
     }
diff --git a/src/Components/Validator/Model/ValidationTest.php b/src/Components/Validator/Model/ValidationTest.php
index 272ebed..7f3d61b 100644
--- a/src/Components/Validator/Model/ValidationTest.php
+++ b/src/Components/Validator/Model/ValidationTest.php
@@ -4,11 +4,13 @@
 
 namespace PHPUnuhi\Components\Validator\Model;
 
+use PHPUnuhi\Models\Translation\Locale;
+
 class ValidationTest
 {
     private string $translationKey;
 
-    private string $locale;
+    private ?Locale $locale;
 
     private string $title;
 
@@ -23,8 +25,7 @@ class ValidationTest
     private bool $success;
 
 
-
-    public function __construct(string $translationKey, string $locale, string $title, string $filename, int $lineNumber, string $classification, string $failureMessage, bool $success)
+    public function __construct(string $translationKey, ?Locale $locale, string $title, string $filename, int $lineNumber, string $classification, string $failureMessage, bool $success)
     {
         $this->translationKey = $translationKey;
         $this->locale = $locale;
@@ -45,7 +46,9 @@ public function getTranslationKey(): string
 
     public function getTitle(): string
     {
-        return '[' . $this->locale . '] ' . $this->title;
+        $localeName = $this->locale instanceof Locale ? $this->locale->getName() : '-';
+
+        return '[' . $localeName . '] ' . $this->title;
     }
 
 
@@ -77,8 +80,7 @@ public function isSuccess(): bool
         return $this->success;
     }
 
-
-    public function getLocale(): string
+    public function getLocale(): ?Locale
     {
         return $this->locale;
     }
diff --git a/src/Components/Validator/Rules/DisallowedTextsRule.php b/src/Components/Validator/Rules/DisallowedTextsRule.php
index 6a3e6a0..f338f26 100644
--- a/src/Components/Validator/Rules/DisallowedTextsRule.php
+++ b/src/Components/Validator/Rules/DisallowedTextsRule.php
@@ -60,7 +60,7 @@ public function validate(TranslationSet $set, StorageInterface $storage): Valida
 
                 $tests[] = new ValidationTest(
                     $identifier,
-                    $locale->getName(),
+                    $locale,
                     "Test against disallowed texts for key: '" . $translation->getKey(),
                     $locale->getFilename(),
                     $locale->findLineNumber($translation->getKey()),
diff --git a/src/Components/Validator/Rules/DuplicateContentRule.php b/src/Components/Validator/Rules/DuplicateContentRule.php
index b5bed80..c435270 100644
--- a/src/Components/Validator/Rules/DuplicateContentRule.php
+++ b/src/Components/Validator/Rules/DuplicateContentRule.php
@@ -108,7 +108,7 @@ private function buildTestEntry(Locale $locale, string $translationKey, bool $pa
     {
         return new ValidationTest(
             $translationKey,
-            $locale->getName(),
+            $locale,
             "Testing for duplicate content in key: '" . $translationKey . "'",
             $locale->getFilename(),
             $locale->findLineNumber($translationKey),
diff --git a/src/Components/Validator/Rules/EmptyContentRule.php b/src/Components/Validator/Rules/EmptyContentRule.php
index 12c5b5f..b7d1250 100644
--- a/src/Components/Validator/Rules/EmptyContentRule.php
+++ b/src/Components/Validator/Rules/EmptyContentRule.php
@@ -43,7 +43,7 @@ private function buildTestEntry(Locale $locale, string $translationKey, bool $pa
     {
         return new ValidationTest(
             $translationKey,
-            $locale->getName(),
+            $locale,
             'Testing for empty content of key: ' . $translationKey,
             $locale->getFilename(),
             $locale->findLineNumber($translationKey),
diff --git a/src/Components/Validator/Rules/MaxKeyLengthRule.php b/src/Components/Validator/Rules/MaxKeyLengthRule.php
index e49a823..3214510 100644
--- a/src/Components/Validator/Rules/MaxKeyLengthRule.php
+++ b/src/Components/Validator/Rules/MaxKeyLengthRule.php
@@ -68,7 +68,7 @@ public function validate(TranslationSet $set, StorageInterface $storage): Valida
 
                 $tests[] = new ValidationTest(
                     $identifier,
-                    $locale->getName(),
+                    $locale,
                     "Test length of key '" . $translation->getKey(),
                     $locale->getFilename(),
                     $locale->findLineNumber($translation->getKey()),
diff --git a/src/Components/Validator/Rules/NestingDepthRule.php b/src/Components/Validator/Rules/NestingDepthRule.php
index dc50197..18680f3 100644
--- a/src/Components/Validator/Rules/NestingDepthRule.php
+++ b/src/Components/Validator/Rules/NestingDepthRule.php
@@ -76,7 +76,7 @@ private function buildTestEntry(Locale $locale, string $translationKey, int $dep
     {
         return new ValidationTest(
             $translationKey,
-            $locale->getName(),
+            $locale,
             "Test nesting-depth of key '" . $translationKey,
             $locale->getFilename(),
             $locale->findLineNumber($translationKey),
diff --git a/src/Facades/CLI/MessValidatorCliFacade.php b/src/Facades/CLI/MessValidatorCliFacade.php
index 351b323..0983972 100644
--- a/src/Facades/CLI/MessValidatorCliFacade.php
+++ b/src/Facades/CLI/MessValidatorCliFacade.php
@@ -77,7 +77,7 @@ private function buildTestValidation(string $translationID, bool $success): Vali
     {
         return new ValidationTest(
             $translationID,
-            '-',
+            null,
             'Test if translation for key ' . $translationID . ' exists in any locale',
             '',
             0,
diff --git a/src/Facades/CLI/SpellingValidatorCliFacade.php b/src/Facades/CLI/SpellingValidatorCliFacade.php
index d01082c..fcc7c5d 100644
--- a/src/Facades/CLI/SpellingValidatorCliFacade.php
+++ b/src/Facades/CLI/SpellingValidatorCliFacade.php
@@ -124,7 +124,7 @@ private function buildTestValidation(string $translationID, string $originalText
 
         return new ValidationTest(
             $translationID,
-            $spellingResult->getLocale(),
+            $set->getLocale($spellingResult->getLocale()),
             'Test if translation for key ' . $translationID . ' is spelled correctly',
             '',
             0,
diff --git a/src/Models/Translation/TranslationSet.php b/src/Models/Translation/TranslationSet.php
index 610629f..80f9c27 100644
--- a/src/Models/Translation/TranslationSet.php
+++ b/src/Models/Translation/TranslationSet.php
@@ -346,4 +346,15 @@ public function findPlaceholders(string $text): array
 
         return $foundPlaceholders;
     }
+
+    public function getLocale(string $name): Locale
+    {
+        foreach ($this->locales as $locale) {
+            if ($locale->getName() === $name) {
+                return $locale;
+            }
+        }
+
+        throw new Exception('Locale not found: ' . $name);
+    }
 }
diff --git a/src/Traits/CommandOutputTrait.php b/src/Traits/CommandOutputTrait.php
index c95075d..100980b 100644
--- a/src/Traits/CommandOutputTrait.php
+++ b/src/Traits/CommandOutputTrait.php
@@ -5,6 +5,7 @@
 namespace PHPUnuhi\Traits;
 
 use PHPUnuhi\Components\Validator\Model\ValidationTest;
+use PHPUnuhi\Models\Translation\Locale;
 use PHPUnuhi\Services\OpenAI\OpenAIUsageTracker;
 use Symfony\Component\Console\Helper\Table;
 use Symfony\Component\Console\Helper\TableCell;
@@ -103,10 +104,22 @@ public function showErrorTable(array $rows, OutputInterface $output): void
                 continue;
             }
 
+            $localeName = '-';
+
+            $locale = $row->getLocale();
+
+            if ($locale instanceof Locale) {
+                $localeName = $locale->getName();
+
+                if ($locale->isBase()) {
+                    $localeName .= ' (base)';
+                }
+            }
+
             $rowData[] = [
                 $intRowIndex,
                 ' ' . $row->getClassification() . ' ',
-                '  ' . $row->getLocale() . ' ',
+                '  ' . $localeName . ' ',
                 ' ' . $row->getTranslationKey() . ' ',
                 $row->getFailureMessage()
             ];
diff --git a/tests/phpunit/Components/Validator/Model/ValidationResultTest.php b/tests/phpunit/Components/Validator/Model/ValidationResultTest.php
index ef42b24..e4d6b1b 100644
--- a/tests/phpunit/Components/Validator/Model/ValidationResultTest.php
+++ b/tests/phpunit/Components/Validator/Model/ValidationResultTest.php
@@ -18,7 +18,7 @@ public function setUp(): void
     {
         $test = new ValidationTest(
             '',
-            '',
+            null,
             '',
             '',
             5,
diff --git a/tests/phpunit/Components/Validator/Model/ValidationTestTest.php b/tests/phpunit/Components/Validator/Model/ValidationTestTest.php
index 46a0457..c0b4d58 100644
--- a/tests/phpunit/Components/Validator/Model/ValidationTestTest.php
+++ b/tests/phpunit/Components/Validator/Model/ValidationTestTest.php
@@ -6,6 +6,7 @@
 
 use PHPUnit\Framework\TestCase;
 use PHPUnuhi\Components\Validator\Model\ValidationTest;
+use PHPUnuhi\Models\Translation\Locale;
 
 class ValidationTestTest extends TestCase
 {
@@ -15,9 +16,11 @@ class ValidationTestTest extends TestCase
 
     public function setUp(): void
     {
+        $locale = new Locale('en_US', false, '', '');
+
         $this->test = new ValidationTest(
             'btnCancel',
-            'en_US',
+            $locale,
             'Testing btnCancel',
             'en.json',
             15,