In German,
derivatives formed with prefixes may be classified in two categories: those used with substantives and adjectives, and those used with verbs. For derivative substantives and adjectives, only two
productive prefixes are generally addable to any substantive or adjective as of 1970:
un-, which expresses negation (as in
ungesund, from
gesund), and
ur-, which means "original, primitive" in substantives, and has an emphatic function in adjectives.
ge-, on the other hand, expresses union or togetherness, but only in a closed group of words—it cannot simply be added to any noun or adjective. Verbal prefixes commonly in use are
be-,
ent-,
er-,
ge-,
miss-,
ver-, and
zer- (see also
Separable verb). The prefix
er- usually indicates the successful completion of an action, and sometimes the conclusion means death. With fewer verbs, it indicates the beginning of an action. The prefix
er- is also used to form verbs from adjectives (e.g.
erkalten is equivalent to
kalt werden which means "to get cold"). == See also ==