


What does "grumble" mean?
Grumble means to complain or murmur in a low, indistinct voice. It can also refer to a low, rumbling sound, like the growling of thunder.
Example sentences:
* She was grumbling about the long wait in line.
* The car's engine was grumbling as it struggled to start.
* The storm clouds were grumbling in the distance.



