What does muster mean?
To muster is to bring people, troops, or resources together, normally so that they can be inspected, assigned a duty, or prepared for action. The word is especially associated with military organization: troops muster for review, soldiers must report for duty, and a muster may also refer to a formal assembly or roster. In modern general use, it describes gathering a team, rallying supporters, or summoning whatever aid is required. “Call a muster” is a familiar military expression, while “pass muster” means to satisfy the standards set for admission or acceptance. The word’s forceful, formal character makes it more evocative than neutral alternatives such as gather, though it remains ordinary in news reporting and institutional contexts.
To assemble troops or other people for duty, review, or action; to gather available people or resources.
"The volunteers mustered outside the school before the storm arrived."
Traditional uses are formal and military, but the verb is also widely used for gathering teams, volunteers, or resources.
An assembly of people, especially troops gathered for review or duty; also a formal list or roll of serving personnel.
"A full muster of the garrison took place in the courtyard."
A muster is typically a formal gathering associated with duty, inspection, or organization rather than an informal meeting.
The plural is used for separate assemblies, reviews, or personnel rolls.
"The regiment held several musters during the winter."
From a military roll of soldiers to gathering a team, a muster has always meant bringing people together for inspection, duty, or action.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does muster come from?
The word entered Middle English from Old French mostier, a term associated with a military review or the collecting of troops. It was borrowed through Medieval Latin from Latin monasterium, originally meaning “monastery,” and its military sense developed from the idea of showing or assembling a body of soldiers. Related English words include monastery, monastic, and monk.
Related word forms
How muster is actually used
The word has a formal or military tone in its traditional uses, although it is also common in general contexts involving teams, volunteers, or support. In the phrase pass muster, it means to meet the required standard.