Grumble

gargouillement

(the sound made by a hungry stomach)

grognement

(surly complaint)

grondement

(a high thundering, rumbling or growling sound)

grondement

(the sound made by a hungry stomach)

bougonner

(to murmur or mutter with discontent)

gargouiller

(to make a low growling or rumbling stomach noise)

grogner

(to murmur or mutter with discontent)

grommeler

(to murmur or mutter with discontent)

gronder

(to make a low growling or rumbling animal noise)

maugréer

(to murmur or mutter with discontent)

ronchonner

(to murmur or mutter with discontent)

rouspéter

(to murmur or mutter with discontent)