[f. STRENUOUS a.: see -OUS and -ITY.] Strenuousness (somewhat disparaging in use).
1886. Academy, 30 Jan., 73/1. The author may be reminded that strenuosity in style is not quite the same thing as strength, and recommended to be sparing of quotations [etc.].
1904. Morning Post, 18 April, 9/1. In every place he [Roosevelt] has filled, he has displayed that strenuosity which must always be associated with his name.
1915. E. V. Lucas, In Gentlest Germany, ix. 70. The watchword of the nation [Germany] is strenuosity.