1. a person who complains frequently or habitually
Usage: informal
2. a person who makes low sounds expressing pain, grief, or distress

Examples

• Don’t be such a moaner about the weather.
• He’s a constant moaner who finds fault with everything.
• The injured hiker was a moaner throughout the rescue.
• She called him a moaner for complaining about the food.
• The patient was a quiet moaner after the surgery.
• Stop being a moaner and try to enjoy the trip.