knicken

Etymology
, from, which is imitative. Cognate with 🇨🇬.

Verb

 * 1)  to crease; to fold; to bend (something that is stable, but not hard, e.g. paper)
 * 2)  to be creased; to be folded; to be bent
 * 3)  to (deliberately) forget, put out of one's mind