tone up tonetics • tone-up · · · Info · Definitions · Synonyms · Characters · · tone up · · Text Common · · Latin · · Scripts 7 · · Length 2 · · Syllables Definitions · · · (verb) give a healthy elasticity to. Synonyms: tone, tone up, strengthen. Example: "Let's tone our muscles." · · Verb Definition 1 Synonyms · · · tone · · Synonym 1 strengthen · · Synonym 2 Characters · · space U+0020 e latin small letter e U+0065 n latin small letter n U+006E o latin small letter o U+006F p latin small letter p U+0070 t latin small letter t U+0074 u latin small letter u U+0075