(adv.) In reality; in truth; in fact; verily; truly; -- used in a variety of sense. Esp.: (a) Denoting emphasis; as, indeed it is so. (b) Denoting concession or admission; as, indeed, you are right. (c) Denoting surprise; as, indeed, is it you? Its meaning is not intrinsic or fixed, but depends largely on the form of expression which it accompanies.

OK Roger a fortiori above all absolutely actually all joking aside all right all the more alright alrighty amen and no mistake as you say assuredly at all events at any rate aye by all means certainly chiefly clearly da decidedly decisively definitely demonstrably distinctly dominantly doubtlessly easily especially even ever so exactly factually fine first of all for a certainty for a fact for certain for real for sure forsooth good good enough hear historically in all conscience in chief in fact in reality in the main in truth in very sooth indeedy indubitably ja just so mainly mais oui manifestly more than ever most assuredly most certainly mostly naturally naturellement nay never so no end nothing else but noticeably observably obviously of a truth of course okay oui particularly patently peculiarly positively precisely predominantly primarily principally quite rather really really-truly right righto sensibly seriously still still more sure sure thing surely to a certainty to be sure truly truthfully unambiguously undeniably undoubtedly unequivocally unmistakably 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