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

1.
苛立たせる, 怒らせる
to annoy someone
:
•
His arrogant attitude really puts my back up.
彼の傲慢な態度は本当に私を苛立たせる。
•
Don't say things that will get her back up.
彼女を怒らせるようなことを言わないで。