1. people who express dissatisfaction or annoyance about something
Usage: plural of complainer

Examples

• The manager was tired of dealing with constant complainers.
• Some complainers never seem satisfied with any solution.
• The restaurant owner listened patiently to the complainers.
• Chronic complainers can bring down team morale.
• She avoided the complainers in the office break room.
• The complainers gathered to voice their concerns about the new policy.