Synonyms to it is that

amen, OK, Roger, absolutely, affirmative, affirmative attitude, affirmativeness, agreed, all right, alright, alrighty, as you say, assuredly, aye, be it so, by all means, certainly, da, done, exactly, fine, good, good enough, hear, indeed, indeedy, ja, just so, mais oui, most assuredly, naturally, naturellement, nod, nod of assent, of course, okay, oui, positively, precisely, quite, rather, really, right, right as rain, right you are, righto, so be it, so is it, so it is, sure, sure thing, surely, that is so, thumbs-up, to be sure, truly, very well, well and good, why yes, yea, yea-saying, yeah, yep, yes, yes indeed, yes indeedy, yes sir, yes sirree, you are right, you bet, you said it, you speak truly, a bit, a little, actually, all, all in all, all told, almighty, altogether, awfully, clean, clearly, cleverly, completely, considerably, decidedly, definitely, demonstrably, entirely, exceedingly, extremely, fairly, far, for a certainty, for real, fully, honestly, in a m