кютам

Etymology 1
Unclear. If native, then probably.

Alternatively:
 * M. Filipova-Bajrova:.
 * Mladenov: Influenced by, via semantic shift “to graze → to tend, to overwatch → to be alert”.

Verb

 * 1)  to be alert, still
 * 2)  to keep one's mouth shut, to be quiet

Etymology 2
Probably expressive from the onomatopoeia.

Verb

 * 1)  to pound, to pummel, to tramp