mus·ter
ˈməstər/ verb
verb: muster; 3rd person present: musters; past tense: mustered; past participle: mustered; gerund or present participle: mustering
(of troops) come together for inspection or preparation.
"the cavalrymen mustered beside the other regiments"
(of a group of people) gather together.
"reporters mustered outside her house"
synonyms:congregate, assemble, gather together, come together, collect together, convene, mass, rally More"reporters mustered outside her house"
2.
collect or assemble (a number or amount).
"he could fail to muster a majority"
summon up (a particular feeling, attitude, or response).
"he replied with as much dignity as he could muster"
synonyms:summon (up), screw up, call up, rally More"she mustered her courage"