- the formation or expression of an opinion or theory without sufficient evidence for proof.
- an opinion or theory so formed or expressed; guess; speculation.
- Obsolete. the interpretation of signs or omens.
- to conclude or suppose from grounds or evidence insufficient to ensure reliability.
- to form conjectures.
Origin of conjecture
SynonymsSee more synonyms for on Thesaurus.com
Examples from the Web for conjecture
And it is conjecture, based on the sketchy bits of evidence we possess.Is Brooklyn Becoming Unsafe for Gays? It Depends On Which Ones
October 18, 2014
After all, the innermost sexual longings of presidents, both living and dead, have long been the stuff of rumor and conjecture.Fifty Shades of Presidential FanFiction
August 2, 2014
It is not a conjecture, and so many of these groups it is basically donor capture.Conservative Senator Kicks Tea Party to the Curb
May 31, 2014
Mr. Rove, you make these claims purely as conjecture without any facts, fanned by the emotions of your partisanship.Karl Rove’s Awful, and Afactual, Remarks About Hillary Clinton’s Health
May 13, 2014
We are in the realms of conjecture now, but I make no apologies for what follows.Beethoven in Love: The Woman Who Captivated the Young Composer
January 26, 2014
She discovered that Emma's conjecture had been only too correct.Grace Harlowe's Return to Overton Campus
Jessie Graham Flower
He hesitated; then, "Well, go on with your conjecture," Rulledge said forgivingly.Quaint Courtships
Nor can I conjecture how far I strayed north or south from my course.Green Mansions
W. H. Hudson
How had he never before chanced on a conjecture so probable?Night and Morning, Complete
She does not own, she has any authority for this, but her own conjecture.Clarissa, Volume 2 (of 9)
- the formation of conclusions from incomplete evidence; guess
- the inference or conclusion so formed
- obsolete interpretation of occult signs
- to infer or arrive at (an opinion, conclusion, etc) from incomplete evidence
Word Origin and History for conjecture
late 14c., "interpretation of signs and omens," from Old French conjecture "surmise, guess," or directly from Latin coniectura "conclusion, interpretation, guess, inference," literally "a casting together (of facts, etc.)," from coniectus, past participle of conicere "to throw together," from com- "together" (see com-) + iacere "to throw" (see jet (v.)). Sense of "forming of opinion without proof" is 1530s.
early 15c., from conjecture (n.). In Middle English also with a parallel conjecte (n.), conjecten (v.). Related: Conjectured; conjecturing.