adjective
- most bad-tempered, irritable, or complaining
Usage: superlative form of grumpy
Examples
- My grandfather is always the grumpiest person in the morning.
- She becomes the grumpiest when she’s hungry.
- Of all the customers today, he was definitely the grumpiest.
- The grumpiest cat in the shelter finally found a home.
- Even the grumpiest teacher smiled at the children’s performance.
- He’s at his grumpiest when he hasn’t had enough sleep.