Just looked it up.
indeed
/ɪnˈdiːd/Submit
adverb
1.
used to emphasize a statement or response confirming something already suggested.
"it was not expected to last long, and indeed it took less than three weeks"
synonyms: as expected, to be sure, in fact, in point of fact, as a matter of fact, in truth, truly, actually, really, in reality, as it happens/happened, certainly, surely, for sure, undeniably, veritably, nay, if truth be told, you could say; archaicin sooth, verily
"there was, indeed, quite a furore"
yes, certainly, assuredly, emphatically, absolutely, exactly, precisely, of course, definitely, quite, positively, naturally, without (a) doubt, without question, unquestionably, undoubtedly, doubtlessly, indubitably;
by all means;
informal you bet, you got it, I'll say
"‘Are you well?’ ‘Indeed!’"