Conjecture
Conjecture noun - An opinion or judgment based on little or no evidence.
Idea
Idea noun - Something imagined or pictured in the mind.
Usage example: my idea of the perfect vacation spot is an uncrowded, unspoiled beach
Conjecture is a synonym for idea in impression topic. Sometimes you can use "Conjecture" instead a noun "Idea", if it concerns topics such as estimate, guess, suspicion.
Mutual synonyms
How words are described
Both words in one sentence
-
As a result, much of the information on this page will be largely conjecture.This is a pity, as Kagerou-Nostalgia is a rather well-written take on an old idea: that of resurrection and rebirth.
Source: Manga / Kagerou-Nostalgia -
It's a small minority language and one that is slowly dying, but it is still in use in places., the pronunciations and intonations are lost to time and no linguist has a real idea of how it sounded like beyond educated guesses and conjecture, which are still guesses nonetheless.
Source: Film / The Passion of the Christ
Cite this Source
Idea and Conjecture. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/conjecture/idea
Conjecture & Idea. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/conjecture/idea>.
Idea or Conjecture. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/conjecture/idea.
Google Ngram Viewer shows how "conjecture" and "idea" have occurred on timeline