kvakk

Etymology 1
.

Interjection

 * 1) quack (sound of a duck)
 * 2) croak (sound of a frog)

Noun

 * 1) a quack (sound of a duck)
 * 2) a croak, ribbit (sound of a frog)

Etymology 2
From, likely a preterite of unattested 🇨🇬 verb.