- 1[transitive] muster something (up) to find as much support, courage, etc. as you can synonym summon We mustered what support we could for the plan. She left the room with all the dignity she could muster. He could muster only 154 votes at the election.
- 2 [intransitive, transitive] to come together; to bring people, especially soldiers, together, for example for military action synonym gather The troops mustered. The force mustered 1,000 strong. muster somebody/something to muster an army The navy could muster 44 warships.
NAmE//ˈmʌstər//Verb Forms present simple I / you / we / they muster
he / she / it musters
past simple mustered
-ing form mustering