Synonyms and related words :
OK, Roger, abiding, absolute, absolutely, accurate, adducible, admissible, agape, agog, all agog, all right, alright, alrighty, amen, anticipant, anticipating, anticipative, anticipatory, apodictic, arrogant, as you say, assured, assuredly, attestative, attestive, authentic, awaiting, aye, based on, believing, bound, by all means, calculable, certain, certainly, certified, changeless, circumstantial, clear, clear and distinct, clear as day, cocksure, cocky, conclusive, confident, constant, convinced, convincing, covered, cumulative, da, damning, decided, decisive, definite, dependable, determinate, determinative, determined, devout, documentary, documented, dogmatic, doubtless, eager, effective, enduring, ensured, established, evidential, evidentiary, ex parte, exactly, expectant, expecting, eye-witness, factual, faithful, faithworthy, fast, fated, fateful, fideistic, final, fine, firm, firsthand, fixed, foolproof, forearmed, forestalling, forewarned, founded on, gaping, genuine, good, good enough, grounded on, guaranteed, hear, hearsay, hopeful, hubristic, implicit, impressed with, in anticipation, in expectation, incontestable, incontrovertible, incorruptible, indeed, indeedy, indefeasible, indicative, indisputable, indubitable, ineluctable, inerrable, inerrant, inescapable, inevasible, inevitable, inexorable, infallible, inflexible, insured, invincible, inviolable, irrefutable, irresistible, irrevocable, ja, just so, looking for, looking forward to, mais oui, material, most assuredly, naturally, naturellement, necessary, never-failing, not surprised, nuncupative, of course, okay, optimistic, oui, overconfident, oversure, overweening, overwhelming, perfectly sure, persuaded, pert, pietistic, pious, pistic, poised, pompous, positive, positively, precisely, predestined, predetermined, predictable, prepared, presumptive, probative, proud, proven, quite, rather, ready, real, really, reassured, reliable, resistless, responsible, right, righto, safe, sanguine, satisfied, secure, secured, self-assured, self-confident, self-important, self-possessed, self-reliant, self-satisfied, set, significant, sold on, solid, sound, stable, staunch, steadfast, steady, straight, strong, substantial, suggestive, sure as death, sure as fate, sure thing, sure-enough, sure-fire, surefire, surely, symptomatic, telling, tested, to be sure, to be trusted, tried, tried and true, TRUE, truly, trustable, trustworthy, trusty, unafraid, unambiguous, unavoidable, unchangeable, unchanging, uncompromising, uncontestable, uncontrollable, undeflectable, undeniable, under the impression, undeviating, undoubtful, undoubting, unequivocal, unerring, unfailing, unfalse, unfaltering, unflinching, unhesitating, univocal, unmistakable, unperfidious, unpreventable, unqualified, unquestionable, unquestioning, unshakable, unshakeable, unshaken, unstoppable, unsurprised, unswerving, untreacherous, unvarying, unwavering, unyielding, valid, very well, waiting, waiting for, warranted, watching for, weighty, well and good, well-founded, well-grounded, wholehearted, why yes, yea, yeah, yep, yes, yes indeed, yes indeedy, yes sir, yes sirree