(adv.) In a fixed, stable, or constant manner.

absolutely actually affirmatively and no mistake assertively assuredly at all events at any rate bec et ongles by all means certainly clearly committedly decisively declaratively definitely demonstrably determinedly devotedly distinctly earnestly emphatically firmly fixedly for a certainty for a fact for certain for real for sure forsooth hammer and tongs heart and soul in all conscience in all seriousness in earnest in good earnest in truth indeed indeedy indubitably inflexibly like a bulldog like a leech manifestly most assuredly most certainly nothing else but noticeably observably obstinately obviously of course patently perseveringly persistently positively predicatively purposefully quite really relentlessly resolutely resolvedly sensibly seriously sincerely singlemindedly staunchly steadfastly steadily surely tenaciously to a certainty tooth and nail truly unambiguously undeniably under oath unequivocally unmistakably unswervingly unyieldingly verily visibly wholeheartedly with a will with constancy with emphasis with total dedication without doubt