käft

Etymology
From, from. Cognate with 🇨🇬, 🇨🇬, 🇨🇬, and 🇨🇬.

Noun

 * 1) a jaw or (open) mouth of an animal (especially one with a powerful bite)
 * 2)   a mouth of a human
 * 3)  a person
 * 1)   a mouth of a human
 * 2)  a person
 * 1)  a person
 * 1)  a person
 * 1)  a person
 * 1)  a person
 * 1)  a person
 * 1)  a person

Usage notes
conjures the image of animal jaws, giving it a colloquial and mildly offensive (or jocular) feeling. This plays into making very rude, as it's telling someone to keep their animalistic jaws shut.

Interjection

 * 1) shut up (short for )

Usage notes
Can take on a jocular tone, which is rare for the harsher.