This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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n. Plural form of growl.

"He could hear the wet growls from the depths of the chained wolf’s throat, there was a hideous grinding of teeth on something so thin as to barely come between them, and the cackling of the Hag as she tended both beast and trees."

growled    growling    growls   

emit    let out    let loose    utter    cry   

complain    complaint   

growled    growling    death growl   

Raul    afoul    cowl    crowl    foul    fowl    howl    jowl    owl    prowl   

snarl    rumble    howl    groan    grunt    roar    chuckle    murmur    hiss    whine