Synonyms to arduously

hammer and tongs, bec et ongles, committedly, decidedly, decisively, determinedly, devotedly, earnestly, effortfully, firmly, fixedly, hard, heart and soul, in all seriousness, in earnest, in good earnest, industriously, inflexibly, laboriously, like a bulldog, like a leech, manfully, obstinately, operosely, perseveringly, persistently, purposefully, relentlessly, resolutely, resolvedly, seriously, sincerely, singlemindedly, staunchly, steadfastly, steadily, strenuously, tenaciously, the hard way, toilsomely, tooth and nail, unswervingly, unyieldingly, wholeheartedly, with a will, with constancy, with effort, with total dedication, Herculean, Philistine, about, absolute, abstruse, accented, acerb, acerbic, acrid, acrimonious, actively, acute, adamant, adamantine, addictive, adverse, afflictive, agonizing, agonizingly, alcoholic, all but, almost, along toward, alveolar, amaroidal, anesthetic, angry, antagonistic, apical, apico-alveolar, apico-dental, approximately, ardent, ardently, arduous, around, articulated, assiduous, assiduously, assimilated, astringent, at close qua