conjecture

IPA: kʌndʒˈɛktʃɝ

(formal) A statement or an idea which is unproven, but is thought to be true; a guess.
(formal) A supposition based upon incomplete evidence; a hypothesis.
(mathematics, linguistics) A statement likely to be true based on available evidence, but which has not been formally proven.
(obsolete) Interpretation of signs and omens.

Examples of "conjecture" in Sentences

Such conjecture is not only legitimate; it's necessary and urgent.
Yet the whole itself must remain conjecture, as imponderable as accomplished facts or as forecasts of the future.
The only effect I can conjecture is an increase in the woes of the unfortunates who must bow to this petty tyranny for'ard.
The word conjecture was all over it: it was full of disclaimers and hedgings, and it raised the hair on the back of his neck, regardless.
For some time I was lost in conjecture as to the cause of this; but yesterday an idea struck me, and if it is well founded, I conjure you to avow it.
To those, yes, American democrats who quibble, cavil, and lose themselves in conjecture over the risks to which the judge who allows a criminal to live subjects honest people, we countered with Maïmonides's axiom: "It is more satisfying to acquit thousands of the guilty than to execute one sole innocent man."