Meanings
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1
adj
irritable, bad-tempered, and inclined to complain
He becomes crabby when he has skipped lunch.
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2
adj
resembling a crab or abounding in crabs
The biologist searched the crabby shoreline for newly molted shells.
Thesaurus
Etymology
From crab + -y. The literal senses mean crablike or full of crabs; the temper sense belongs with older crabbed ("contrary, ill-tempered"), which also developed from figurative associations with the crab.