Akademik

like a bear with a sore head
(like) a bear with a sore head — see bear, 1
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Main Entry:sore

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like a bear with a sore ˈhead f9 idiom
(informal) bad-tempered or in a bad-tempered way

I should keep out of his way. He's like a bear with a sore head this morning.

Main entry:bearidiom

Useful english dictionary. 2012.