muster
mus‧ter1 /ˈmʌstə $ -ər/ 
verb
SYN summon (up)
muster (up) the courage/confidence/energy etc to do something
Finally I mustered up the courage to ask her out.
Senator Newbolt has been trying to muster support for his proposals.
‘It’s going to be fine,’ replied David, with as much confidence as he could muster.
2. [intransitive and transitive] if soldiers muster, or if someone musters them, they come together in a group
SYN gather:
In April 1185, he began to muster an army.
muster2 noun
1. pass muster (as something) to be accepted as good enough for something:
I wasn’t sure that our clothing would pass muster at the club door.
2. [countable] literary a gathering together of soldiers so that they can be counted, checked etc
| I |
verb Date: 1300-1400
Language: Old French
Origin: monstrer, from Latin monstrare 'to show'
1. [transitive] (also muster up something) to get enough courage, confidence, support etc to do something, especially with difficulty Language: Old French
Origin: monstrer, from Latin monstrare 'to show'
SYN summon (up)
muster (up) the courage/confidence/energy etc to do something
2. [intransitive and transitive] if soldiers muster, or if someone musters them, they come together in a group
SYN gather:
| II |
noun1. pass muster (as something) to be accepted as good enough for something:
2. [countable] literary a gathering together of soldiers so that they can be counted, checked etc