human action human • human activity · · · Info · Definitions · Synonyms · Characters · · human action · · Text Common · · Latin · · Scripts 12 · · Length 4 · · Syllables Definitions · · · (noun) something that people do or cause to happen. Synonyms: act, deed, human action, human activity. · · Noun Definition 1 Synonyms · · · act · · Synonym 1 deed · · Synonym 2 human activity · · Synonym 3 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F t latin small letter t U+0074 u latin small letter u U+0075