muster in
C1 formal separable transitive
In simple words
To officially join the army or military in a formal ceremony.
Literal meaning: To bring (muster) people in to military service — fairly transparent in military context.
Meanings
1 C1 formal
To formally enlist or induct someone into military service.
"The regiment was mustered in at Fort Dix before being deployed overseas."
Grammar: separable
Usage notes
A formal, largely historical military term, primarily used in American English in historical contexts (especially the American Civil War). Rarely heard in contemporary everyday speech. The opposite is 'muster out.'
Commonly used with
troops soldiers regiment service army recruits
Forms
Base
muster in
I/you/we/they
3rd person
musters in
he/she/it
Past simple
mustered in
yesterday
Past participle
mustered in
have + pp
-ing form
mustering in
continuous
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Synonyms
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