1. more bad-tempered, irritable, or complaining than usual
Usage: comparative form of grouchy

Examples

• He gets grouchier when he hasn’t had enough sleep.
• The weather made everyone grouchier than usual.
• She’s been grouchier since starting her new medication.
• My grandfather becomes grouchier as the day goes on.
• The customers seemed grouchier during the holiday rush.
• After missing lunch, I felt much grouchier in the afternoon.