have one's back up (English, verb)
expansion: have one's back up (third-person singular simple present has one's back up, present participle having one's back up, simple past and past participle had one's back up)
Senses:
glosses: To be angry or defensive.
tags: idiomatic
Forms:
form: has one's back up
tags: present
singular
third-person
form: having one's back up
tags: participle
present
form: had one's back up
tags: participle
past
form: had one's back up
tags: past