German Grammar

Regular declension

Most nouns only change in:

  • masculine / neuter genitive singular
  • dative plural

Genitive singular

PatternEndingExample
Multisyllabic-sdes Lehrers
Monosyllabicoften -esdes Tages
Sibilant ending (-s, -ss, , -x, -z, -tz)-esdes Hauses

Same sibilant group appears in verb conjugation (2sg present).

Dative plural

Add -n (unless the plural already ends in -n / -s).

Observe: dative plural NPs often surface as a chain of -en endings — e.g. mit den kleinen Hunden.

Plural and gender

Plural form correlates with:

  • affixes (some prefixes/suffixes predict gender + plural)
  • gender + syllable count
  • semantics (certain meaning classes prefer a gender)

Special patterns:

FormPlural
feminine -in-innen
-nis-nisse

Bare genitive plural without article is largely obsolete; prefer von + dative (unless a strong adjective marks the case).

Weak nouns (N-Deklination)

  • Almost all weak nouns are masculine
    • Exception: das Herz
  • All forms except nominative singular take -en
  • Plural never umlauts

Groups to enumerate

PatternExamples
masculine -eder Affe, der Bote, der Zeuge, …
-and, -ant, -entder Doktorand, der Student, …
-istder Pianist, …
Greek-origin professionsder Philosoph, …
other(list as you meet them)

Topics to expand

  • Countries, nationals, languages
  • Affix → gender / plural prediction table
  • Articles — case marked on the determiner
  • Adjectives — endings depend on article type