1. comparative form of grumpy; more bad-tempered, irritable, or complaining
Usage: comparative form

Examples

• He gets grumpier when he’s tired.
• The old man seemed grumpier than usual today.
• She’s always grumpier in the morning before her coffee.
• The weather made everyone grumpier during the long winter.
• My grandfather becomes grumpier as the day goes on.
• The customers were getting grumpier as they waited in line.