Word Study
indubitable
CIDE DICTIONARY
Not dubitable or doubtful; too evident to admit of doubt; unquestionable; evident; apparently certain; as, an indubitable conclusion.
Syn. -- Unquestionable; evident; incontrovertible; incontestable; undeniable; irrefragable.
OXFORD DICTIONARY
indubitable, adj. that cannot be doubted.
Derivative
indubitably adv.
Etymology
F indubitable or L indubitabilis (as IN-(1), dubitare to doubt)
THESAURUS
indubitable
absolute, actual, admitting no question, apparent, bona fide, clear, clear as crystal, confirmable, crystal-clear, demonstrable, demonstratable, discernible, distinct, down, evident, explicit, express, factual, flat, genuine, historical, inappealable, incontestable, incontrovertible, indisputable, irrefragable, irrefutable, manifest, noticeable, observable, obvious, open-and-shut, palpable, patent, perceivable, perceptible, perspicuous, plain, plain as day, provable, real, seeable, self-evident, self-explaining, self-explanatory, sure-enough, tangible, testable, to be seen, true, unanswerable, unconfutable, undeniable, undoubted, unimpeachable, unmistakable, unquestionable, unrefutable, verifiable, veritable, visibleROGET THESAURUS
indubitable
Certainty
N certainty, necessity, certitude, surety, assurance, dead certainty, moral certainty, infallibleness, infallibility, reliability, indubitableness, inevitableness, unquestionableness, gospel, scripture, church, pope, court of final appeal, res judicata, ultimatum positiveness, dogmatism, dogmatist, dogmatizer, doctrinaire, bigot, opinionist, Sir Oracle, ipse dixit, fact, positive fact, matter of fact, fait accompli, certain, sure, assured, solid, well-founded, unqualified, absolute, positive, determinate, definite, clear, unequivocal, categorical, unmistakable, decisive, decided, ascertained, inevitable, unavoidable, avoidless, ineluctable, unerring, infallible, unchangeable, to be depended on, trustworthy, reliable, bound, unimpeachable, undeniable, unquestionable, indisputable, incontestable, incontrovertible, indubitable, irrefutable, conclusive, without power of appeal, indubious, without doubt, beyond a doubt, without a shade or shadow of doubt, without question, beyond question, past dispute, clear as day, beyond all question, beyond all dispute, undoubted, uncontested, unquestioned, undisputed, questionless, doubtless, authoritative, authentic, official, sure as fate, sure as death and taxes, sure as a gun, evident, self-evident, axiomatic, clear, clear as day, clear as the sun at noonday, certainly, for certain, certes, sure, no doubt, doubtless, and no mistake, flagrante delicto, sure enough, to be sure, of course, as a matter of course, a coup sur, to a certainty, in truth, at any rate, at all events, without fail, coute que coute, coute qu'il coute, whatever may happen, if the worst come to the worst, come what may, happen what may, come what will, sink or swim, rain or shine, cela va sans dire, there is no question, no question, not a shadow of doubt, there is not a shadow of doubt, the die is cast, facts are stubborn things.Manifestation
N manifestation, plainness, plain speaking, expression, showing, exposition, demonstration, exhibition, production, display, show, showing off, premonstration, exhibit, indication, publicity, disclosure, openness panchement, evidence, manifest, apparent, salient, striking, demonstrative, prominent, in the foreground, notable, pronounced, flagrant, notorious, arrant, stark staring, unshaded, glaring, defined, definite, distinct, conspicuous, obvious, evident, unmistakable, indubitable, not to be mistaken, palpable, self-evident, autoptical, intelligible, plain, clear, clear as day, clear as daylight, clear as noonday, plain as a pike staff, plain as the sun at noon-day, plain as the nose on one's face, plain as the way to parish church, explicit, overt, patent, express, ostensible, open, open as day, naked, bare, literal, downright, undisguised, exoteric, unreserved, frank, plain-spoken, candid (veracious), barefaced, manifested, disclosed, capable of being shown, producible, inconcealable, unconcealable, no secret, manifestly, openly, before one's eyes, under one's nose, to one's face, face to face, above board, cartes sur table, on the stage, in open court, in the open streets, in market overt, in the face of day, face of heaven, in broad daylight, in open daylight, without reserve, at first blush, prima facie, on the face of, in set terms, cela saute aux yeux, he that runs may read, you can see it with half an eye, it needs no ghost to tell us, the meaning lies on the surface, cela va sans dire, res ipsa loquitur, clothing the palpable and familiar, fari quae sentiat, volto sciolto i pensieri stretti, you don't need a weatherman to know which way the.For further exploring for "indubitable" in Webster Dictionary Online