strenuousness strenuously • strepen · · · Info · Definitions · Synonyms · Characters · · strenuousness · · Text Latin · · Script 13 · · Length Definitions · · · (noun) extreme effortfulness. Synonyms: arduousness. · · Noun Definition 1 Synonyms · · · arduousness · · Synonym 1 Characters · · e latin small letter e U+0065 n latin small letter n U+006E 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