muster up muster roll • muster-out · · · Info · Definitions · Synonyms · Characters · · muster up · · Text Common · · Latin · · Scripts 9 · · Length 3 · · Syllables Definitions · · · (verb) gather or bring together. Synonyms: muster, rally, summon, come up, muster up. Examples: "Muster the courage to do something." "She rallied her intellect." "Summon all your courage." · · Verb Definition 1 Synonyms · · · muster · · Synonym 1 rally · · Synonym 2 summon · · Synonym 3 come up · · Synonym 4 Characters · · space U+0020 e latin small letter e U+0065 m latin small letter m U+006D p latin small letter p U+0070 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