German forms the plural in a variety of ways, both by adding endings to the base form, and by mutating (umlauting) the root vowel.
Ending | Masculine | Feminine | Neuter | |||
---|---|---|---|---|---|---|
without umlaut | with umlaut | without umlaut | with umlaut | without umlaut | with umlaut | |
-e | Hund – Hunde | Turm – Türme | Wildnis – Wildnisse | Hand – Hände | Jahr – Jahre | Floß – Flöße |
-er | Geist – Geister | Wurm – Würmer | -/- | -/- | Ei – Eier | Amt – Ämter |
-(e)n | Bauer – Bauern | -/- | Tafel – Tafeln | Werkstatt – Werkstätten | Ohr – Ohren | -/- |
-s | Kakadu – Kakadus | -/- | Boa – Boas | -/- | Radio – Radios | -/- |
-∅ | Bürger – Bürger | Vater – Väter | Peperoni – Peperoni | Mutter – Mütter | Messer – Messer | Kloster – Klöster |
The majority of masculine and neuter nouns form the plural with -e. For example:
In addition feminine nouns ending in -nis or -sal form the plural with -e.
Most masculine nouns form the plural by adding an umlaut and adding -e. Masculine nouns often add umlaut, but not always.
Some feminine nouns form the plural by adding -e and umlauting the vowel:
One neuter noun: Floß (“raft”).
The majority of feminine nouns form the plural with -en. For these nouns ending in -el, er, or e, only -n is added to the end. These never add umlaut except for Werkstatt.
A group of masculine nouns adds -(e)n in every case except the masculine nominative singular. This includes nearly every masculine noun ending in -e, and they are mostly nouns of people and animals.
Some nouns, especially those of foreign origin remove their ending and replace it with -en
Many neuter nouns and a few masculine nouns form the plural with -er. These nouns always add umlaut if possible (the stressed vowel is a, o, au, or u).
Nearly all masculine and neuter nouns ending in -en, -er, -el, -chen, or -lein have no plural suffix.
Two neuter nouns (Kloster and Wasser), two feminine nouns (Mutter and Tochter), and the following masculine nouns form the plural solely by adding umlaut.
Most words borrowed from English or French form the plural by adding -s. In addition acronyms and other parts of speech used as nouns form the plural with -s.
The s-Plural is used for the identification of family members:
but:
George O. Curme (1922), A Grammar of the German Language, Revised edition, New York: The Macmillan Company