muscle spasm muscle sense • muscle system · · · Info · Definitions · Synonyms · Characters · · muscle spasm · · Text Common · · Latin · · Scripts 12 · · Length 4 · · Syllables Definitions · · · (noun) a painful and involuntary muscular contraction. Synonyms: spasm, cramp, muscle spasm. · · Noun Definition 1 Synonyms · · · spasm · · Synonym 1 cramp · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 l latin small letter l U+006C m latin small letter m U+006D p latin small letter p U+0070 s latin small letter s U+0073 u latin small letter u U+0075