1. people who complain or express dissatisfaction in a bad-tempered way
Usage: plural of grumbler; informal

Examples

• The grumblers in the office complained about the new schedule every morning.
• Despite the team's success, there were always a few grumblers unhappy with the coach's decisions.
• The grumblers at the meeting voiced their concerns about the budget cuts.
• No matter what management did, the grumblers found something to criticize.
• She was known as one of the office grumblers, always finding fault with everything.