From Longman Dictionary of Contemporary Englishcrabbycrab‧by /ˈkræbi/ adjective BAD-TEMPEREDeasily annoyed by unimportant things SYN bad-tempered a crabby old man You’re a bit crabby this morning.
Examples from the Corpus
crabby• Without a happy and secure nest, you feel more than a little crabby.• And Nat was like a running sore, crabby, miserable.• He's very crabby right now because he has a bad tooth. 