Croak
Part of speech: noun
Definition: A faint, harsh sound made in the throat. The cry of a frog or toad.
Part of speech: verb
Definition: To make a croak. Of a frog, to make its cry. To die. Of a raven, to make its cry. To kill someone or something.
Grumble
Part of speech: verb
Definition: To make a low, growling or rumbling noise, like a hungry stomach or certain animals.To complain.To utter in a grumbling fashion.
Part of speech: noun
Definition: A low thundering, rumbling or growling soundThe sound made by a hungry stomachA complaint