German irregular verbs do not follow the standard conjugation patterns. Instead, they exhibit changes in their stem vowels or endings across different tenses and persons. These verbs are often categorized as strong, mixed, or irregular, each with distinct patterns that are essential for proper usage and understanding.

A1-B2 Frequent Irregular Verbs

sein, haben, werden, and gehen
Core irregulars include 'sein,' 'haben,' and 'werden.'
Commonly learned irregular verbs from A1 to B2 include sein (to be), haben (to have), werden (to become), and other strong verb roots like gehen (to go).
  • sein, haben, werden, machen, gehen, kommen, sehen, geben, nehmen, sprechen
  • These verbs often form the backbone of German verb instruction from A1 through B2.
  • Their irregular patterns appear in multiple tenses: present, past (Präteritum), and subjunctive.
Many irregular verbs change their stem vowels in the present tense for du and er/sie/es: a → ä (fahren → du fährst), e → i (geben → du gibst), e → ie (sehen → du siehst).
  • fahren (to drive): ich fahre, du fährst, er fährt
  • geben (to give): ich gebe, du gibst, er gibt
  • sehen (to see): ich sehe, du siehst, er sieht
Typical changes include a→ä, e→i, e→ie.

Strong Verb Classes

Strong verbs are a major group of irregular verbs, characterized by systematic stem changes across tenses (e.g., singen: sing, sang, gesungen). They are classified by their vowel change patterns and typically drop regular endings in some forms.
ClassExamplePresentSimple PastPast Participle
Ifinden (to find)finde, findestfandgefunden
IIsingen (to sing)singe, singstsanggesungen
IIInehmen (to take)nehme, nimmstnahmgenommen
Mixed verbs combine a regular ending pattern with an irregular stem change. Examples include bringen (bringt, brachte, gebracht).
  • Regular endings + irregular stem (e.g., bringen: brachte, gebracht)
  • Common mixed verbs: bringen, denken, nennen, haben, sein, werden
Strong verbs have stem vowel changes and distinct past forms.
Common mixed verbs include bringen, denken, nennen.

Mixed Verbs

Mixed verbs (e.g., bringen) have a regular conjugation in most forms but show an irregular stem change in the past tense and participle.
  • Present: bringt (like regular -en verb)
  • Simple past: brachte (not brought...)
  • Past participle: gebracht (not...gebringt)
Typical mixed verbs include bringen, denken, nennen, brennen.
Mixed verbs get regular endings but an irregular stem in the past.

Common Pitfalls

Learners often mistakenly apply regular patterns to irregular verbs, confuse similar verbs, or overlook stem changes in spoken forms.
  • Overgeneralizing regular patterns (e.g., saying du machst for du wirst)
  • Forgetting stem changes in du/er forms
  • Confusing related verbs (e.g., haben vs. sein)
Forgetting stem changes and misapplying rules are common pitfalls.
Common pitfalls include misapplying rules, forgetting stem changes, and confusing verb classes.

Conclusion

German irregular verbs are essential for mastering the language beyond the basics. Their unique patterns—stem vowel changes, strong verb classes, and mixed conjugations—are key to fluent communication.
  • Irregular verbs include some of the most common and essential verbs in German.
  • Understanding their patterns helps prevent common errors and boosts confidence in all tenses.
  • Regular practice with examples and exercises is the best way to master irregular conjugations.
Stem vowel changes, strong roots, and mixed patterns are key features.