(adv.) Without doubt or question; unquestionably.

OK Roger absolutely actually all right alright alrighty amen and no mistake as you say assuredly at all events at any rate aye by all means clearly da decidedly decisively definitely demonstrably distinctly exactly factually fatefully fine for a certainty for a fact for certain for real for sure forsooth good good enough hear historically in all conscience in fact in reality in truth in very sooth indeed indeedy indefeasibly indubitably ineluctably inescapably inevasibly inevitably inexorably inflexibly irrevocably ja just so mais oui manifestly most assuredly most certainly naturally naturellement necessarily nothing else but noticeably observably obviously of a truth of course okay oui patently positively precisely quite rather really really-truly relentlessly right righto sensibly seriously sure sure thing surely to a certainty to be sure truly unambiguously unavoidably uncontrollably undeniably undoubtedly unequivocally unmistakably unpreventably unyieldingly verily veritably very well visibly well and good why yes with truth without doubt yea yeah yep yes yes indeed yes indeedy yes sir yes sirree