klagen

Etymology
From, from , from.

Verb

 * 1)  to complain
 * 2)  to sue

Conjugation
Sometimes encountered as a strong verb:

Etymology
From, from , from.

Verb

 * 1)  to complain (to express feelings of pain, dissatisfaction, or resentment)
 * 2)  to wail, lament
 * 3)  to sue
 * 4)  to sue someone