be up in arms

US /bi ʌp ɪn ɑːrmz/
UK /bi ʌp ɪn ɑːrmz/
"be up in arms" picture
1.

sangat marah, protes keras

to be very angry and ready to protest strongly about something

:
The residents were up in arms about the proposed new factory.
Penduduk sangat marah tentang cadangan kilang baru itu.
My parents will be up in arms if I don't come home by midnight.
Ibu bapa saya akan sangat marah jika saya tidak pulang sebelum tengah malam.