Definition:
Compare grumbling with other words:
crumbling vs. grumbling
grumbling vs. grunting
grumbling vs. murmuring
grumbling vs. murmur
grumbling vs. mumbling
grumbling vs. mobile
grumbling vs. twining
grumbling vs. rumbling
complaining vs. grumbling
curmurring vs. grumbling
growl vs. grumbling
grumbling vs. querulous