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- get dander up
get dander up
get someone's dander up
and get someone's back up; get someone's hackles up; get someone's Irish up; put someone's back upFig. to make someone get angry. (Fixed order.) Now, don't get your dander up. Calm down. I insulted him and really got his hackles up. Bob had his Irish up all day yesterday. I don't know what was wrong. Now, now, don't get your back up. I didn't mean any harm.