noun
- a person who complains frequently or habitually
Examples
- My grandfather was a notorious grumbler who found fault with everything.
- Don’t be such a grumbler about the weather.
- The office grumbler complained about the new coffee machine.
- She’s not really angry, just a natural grumbler.
- Every family has at least one grumbler at holiday dinners.
- The coach ignored the grumblers on the team and focused on positive players.