What does conjecture mean?

Definitions for conjecture
kənˈdʒɛk tʃərcon·jec·ture

This dictionary definitions page includes all the possible meanings, example usage and translations of the word conjecture.

Princeton's WordNet

  1. speculation, conjecturenoun

    a hypothesis that has been formed by speculating or conjecturing (usually with little hard evidence)

    "speculations about the outcome of the election"; "he dismissed it as mere conjecture"

  2. guess, conjecture, supposition, surmise, surmisal, speculation, hypothesisnoun

    a message expressing an opinion based on incomplete evidence

  3. conjectureverb

    reasoning that involves the formation of conclusions from incomplete evidence

  4. speculate, theorize, theorise, conjecture, hypothesize, hypothesise, hypothecate, supposeverb

    to believe especially on uncertain or tentative grounds

    "Scientists supposed that large dinosaurs lived in swamps"


  1. conjecturenoun

    A statement or an idea which is unproven, but is thought to be true; a guess.

    I explained it, but it is pure conjecture whether he understood, or not.

  2. conjecturenoun

    A supposition based upon incomplete evidence; a hypothesis.

    The physicist used his conjecture about subatomic particles to design an experiment.

  3. conjecturenoun

    A statement likely to be true based on available evidence, but which has not been formally proven.

  4. conjecturenoun

    Interpretation of signs and omens.

  5. conjectureverb

    To guess; to venture an unproven idea.

    I do not know if it is true; I am simply conjecturing here.

  6. Etymology: From coniectura, from coniectus, perfect passive participle of conicio, from con- + iacio; see jet. Compare adjective, eject, inject, project, reject, subject, object, trajectory.

Samuel Johnson's Dictionary

  1. Conjecturenoun

    Etymology: conjectura, Latin.

    In the casting of lots a man cannot, upon any ground of reason, bring the event of them so much as under conjecture. Robert South, Sermons.

    Now entertain conjecture of a time,
    When creeping murmur, and the poring dark,
    Fills the wide vessel of the universe. William Shakespeare, Henry V.

  2. To Conjectureverb

    To guess; to judge by guess; to entertain an opinion upon bare probability.

    Etymology: from the noun.

    When we look upon such things as equally may or may not be, human reason can then, at the best, but conjecture what will be. Robert South, Sermons.


  1. Conjecture

    In mathematics, a conjecture is a conclusion or a proposition which is suspected to be true due to preliminary supporting evidence, but for which no proof or disproof has yet been found. Some conjectures, such as the Riemann hypothesis (still a conjecture) or Fermat's Last Theorem (a conjecture until proven in 1995 by Andrew Wiles), have shaped much of mathematical history as new areas of mathematics are developed in order to prove them.


  1. conjecture

    A conjecture is an unproven proposition or idea that is believed to be true, based on preliminary evidence or logical reasoning, but has not been conclusively proven or disproven through rigorous testing or experimentation. It is often used in the field of mathematics or other related sciences.

Webster Dictionary

  1. Conjecturenoun

    an opinion, or judgment, formed on defective or presumptive evidence; probable inference; surmise; guess; suspicion

  2. Conjectureverb

    to arrive at by conjecture; to infer on slight evidence; to surmise; to guess; to form, at random, opinions concerning

  3. Conjectureverb

    to make conjectures; to surmise; to guess; to infer; to form an opinion; to imagine

  4. Etymology: [L. conjectura, fr. conjicere, conjectum, to throw together, infer, conjecture; con- + jacere to throw: cf. F. conjecturer. See Jet a shooting forth.]


  1. Conjecture

    A conjecture is a proposition that is unproven. Karl Popper pioneered the use of the term "conjecture" in scientific philosophy. Conjecture is contrasted by hypothesis, which is a testable statement based on accepted grounds. In mathematics, a conjecture is an unproven proposition that appears correct.

Chambers 20th Century Dictionary

  1. Conjecture

    kon-jekt′ūr, n. a forecast: an opinion formed on slight or defective evidence: an opinion without proof: a guess: an idea.—v.t. to make conjectures regarding: to infer on slight evidence: to guess.—adjs. Conject′urable, that may be conjectured; Conject′ural, involving conjecture: given to conjecture.—adv. Conject′urally. [L. conjicĕre, conjectum, to throw together—con, together, and jacĕre, to throw.]

Matched Categories

How to pronounce conjecture?

How to say conjecture in sign language?


  1. Chaldean Numerology

    The numerical value of conjecture in Chaldean Numerology is: 5

  2. Pythagorean Numerology

    The numerical value of conjecture in Pythagorean Numerology is: 6

Examples of conjecture in a Sentence

  1. Panoyotis Mavromatis:

    Scientists conjecture there may be a genetic component to our degree and quality of response to music. Clearly there are no universal patterns, but music therapists can still experiment to find out what works or not with a given individual.

  2. Susan Gordon:

    If I were to take my experience and offer conjecture, it would be practical, i need Russia.

  3. Anatole France:

    To die for an idea is to place a pretty high price on conjecture.

  4. Matthew Tuohy:

    I think that the case against Sheila Kelly is extremely weak, it is purely speculation and conjecture at this point.

  5. Anatole France:

    To be willing to die for an idea is to set a rather high price on conjecture.

Popularity rank by frequency of use


Translations for conjecture

From our Multilingual Translation Dictionary

Get even more translations for conjecture »


Find a translation for the conjecture definition in other languages:

Select another language:

  • - Select -
  • 简体中文 (Chinese - Simplified)
  • 繁體中文 (Chinese - Traditional)
  • Español (Spanish)
  • Esperanto (Esperanto)
  • 日本語 (Japanese)
  • Português (Portuguese)
  • Deutsch (German)
  • العربية (Arabic)
  • Français (French)
  • Русский (Russian)
  • ಕನ್ನಡ (Kannada)
  • 한국어 (Korean)
  • עברית (Hebrew)
  • Gaeilge (Irish)
  • Українська (Ukrainian)
  • اردو (Urdu)
  • Magyar (Hungarian)
  • मानक हिन्दी (Hindi)
  • Indonesia (Indonesian)
  • Italiano (Italian)
  • தமிழ் (Tamil)
  • Türkçe (Turkish)
  • తెలుగు (Telugu)
  • ภาษาไทย (Thai)
  • Tiếng Việt (Vietnamese)
  • Čeština (Czech)
  • Polski (Polish)
  • Bahasa Indonesia (Indonesian)
  • Românește (Romanian)
  • Nederlands (Dutch)
  • Ελληνικά (Greek)
  • Latinum (Latin)
  • Svenska (Swedish)
  • Dansk (Danish)
  • Suomi (Finnish)
  • فارسی (Persian)
  • ייִדיש (Yiddish)
  • հայերեն (Armenian)
  • Norsk (Norwegian)
  • English (English)

Word of the Day

Would you like us to send you a FREE new word definition delivered to your inbox daily?

Please enter your email address:


Use the citation below to add this definition to your bibliography:


"conjecture." Definitions.net. STANDS4 LLC, 2024. Web. 16 Jun 2024. <https://www.definitions.net/definition/conjecture>.

Discuss these conjecture definitions with the community:


    Are we missing a good definition for conjecture? Don't keep it to yourself...

    Image or illustration of


    Credit »

    Free, no signup required:

    Add to Chrome

    Get instant definitions for any word that hits you anywhere on the web!

    Free, no signup required:

    Add to Firefox

    Get instant definitions for any word that hits you anywhere on the web!

    Browse Definitions.net


    Are you a words master?

    greatly exceeding bounds of reason or moderation
    A jejune
    B valetudinarian
    C currish
    D usurious

    Nearby & related entries:

    Alternative searches for conjecture: