growl
US /ɡraʊl/
UK /ɡraʊl/

1.
grommen
to make a low, guttural, and often menacing sound, typically produced by an animal (especially a dog) in the throat
:
•
The dog began to growl at the stranger.
De hond begon te grommen naar de vreemdeling.
•
A bear's growl can be very intimidating.
Het gegrom van een beer kan erg intimiderend zijn.
2.
mopperen, brommen
to make a low, rumbling sound, often indicating displeasure or a warning, similar to an animal's growl but made by a person
:
•
He let out a low growl of frustration.
Hij liet een laag gegrom van frustratie horen.
•
The old man would often growl about the noisy children.
De oude man wilde vaak grommen over de luidruchtige kinderen.