Question

make a sentence with grumble

Answer 1

There's been a lot of grumbling among the employees
.Some of the customers have been grumblingabout poor service.
Fans grumbled about the team's poor play.
“When are we going to leave?” he grumbled.We could hear thunder grumbling in the distance.

Answer 2

Grumble - complain

Sentence:

Some of the customers were grumbling outside the shop.