muster-out muster up • musterable · · · Info · Definitions · Synonyms · Characters · · muster-out · · Text Common · · Latin · · Scripts 10 · · Length 3 · · Syllables Definitions · · · (verb) release from military service. Synonyms: discharge, muster out. · · Verb Definition 1 Synonyms · · · discharge · · Synonym 1 muster out · · Synonym 2 Characters · · - hyphen-minus U+002D e latin small letter e U+0065 m latin small letter m U+006D o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 u latin small letter u U+0075