put/get someone's back up

US /pʊt/ɡɛt ˈsʌm.wʌnz bæk ʌp/
UK /pʊt/ɡɛt ˈsʌm.wʌnz bæk ʌp/
"put/get someone's back up" picture
1.

to annoy someone

:
His arrogant attitude really puts my back up.
Don't say things that will get her back up.