Very angry or outraged about something.
Trusted by1.5M+English learners & teachers worldwide
Very angry and ready to protest or fight back about something.
When people are up in arms, they are outraged and actively voicing their opposition.
It is often used to describe a group reaction to an unfair decision or change that affects them directly.
"Up in Smoke"
—
Something that has failed or been destroyed, especially plans or hopes
"At Each Other's Throats"
—
Two people or groups actively fighting or arguing intensely with each other
"Up in Arms"
—
Being very angry and actively protesting against something