krek-

“to make a sharp sound, to crack”

Widely acceptedsound

crack, creak, croak, cricket

Onomatopoeic root yielding Old English cracian "to crack", English crack, creak, croak, cricket.

(s)teh₂n-“to thunder”(s)tenh₂-“to crash, to thunder”bʰleh₁-k-“to cry out, to bleat”bʰleh₁-s-“to blow, to blast”bʰormo-“to buzz, murmur, drone”bʰrem-“to hum, to buzz, to make a low sound”gerH-“to cry out hoarsely, to call like a crane”gerh₂-₂“to cry, call out”