gären

Etymology
From, from , from. Variants with dissimilative hardening j- → g- before front vowels occur since Middle High German. The internal -r- is from the past forms (as in, ), in part perhaps also from the causative , from. These developments were reinforced by association with the originally unrelated. Related to,.

Verb

 * 1)  to ferment
 * 2)  to be agitated; to seethe
 * 1)  to be agitated; to seethe

Usage notes

 * In the literal sense, the past tense is now usually, though exists as an alternative. The past participle predominantly remains strong . In the figurative sense, only weak forms are commonly used.