| Date: | 1300-1400 |
| Language: | Old French |
| Origin: | monstrer, from Latin monstrare 'to show' |
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mus‧ter1

1 [transitive] also muster up something to get enough courage, confidence, support etc to do something, especially with difficulty [= summon (up)]
Senator Newbolt has been trying to muster support for his proposals.
muster (up) the courage/confidence/energy etc to do something
Finally I mustered up the courage to ask her out.
Finally I mustered up the courage to ask her out.
Senator Newbolt has been trying to muster support for his proposals.2 [intransitive and transitive] if soldiers muster, or if someone musters them, they come together in a group [= gather]:
