strenuously Synonyms

vivaciously assiduously aggressively vigorously zealously sedulously vehemently toughly strongly strong stoutly robustly laboriously energetically fervently unremittingly toilsomely tirelessly spiritedly purposefully powerfully painstakingly industriously hammer and tongs forcefully fiercely persistently onerously eagerly dynamically doggedly diligently difficultly connectively busily briskly arduously ardently animatedly earnestly explosively firmly mightily lustily intently intensively intensely indefatigably hotly heartily