What is another word for theory?

Synonyms for theory
ˈθi ə ri, ˈθɪər ithe·o·ry

This thesaurus page is about all possible synonyms, equivalent, same meaning and similar words for the term theory.

English Synonyms and Antonyms

  1. theory

    A hypothesis is a statement of what is deemed possibly true, assumed and reasoned upon as if certainly true, with a view of reaching truth not yet surely known; especially, in the sciences, a hypothesis is a comprehensive tentative explanation of certain phenomena, which is meant to include all other facts of the same class, and which is assumed as true till there has been opportunity to bring all related facts into comparison; if the hypothesis explains all the facts, it is regarded as verified; till then it is regarded as a working hypothesis, that is, one that may answer for present practical purposes. A hypothesis may be termed a comprehensive guess. A guess is a swift conclusion from data directly at hand, and held as probable or tentative, while one confessedly lacks material for absolute certainty. A conjecture is more methodical than a guess, while a supposition is still slower and more settled; a conjecture, like a guess, is preliminary and tentative; a supposition is more nearly final; a surmise is more floating and visionary, and often sinister; as, a surmise that a stranger may be a pickpocket. Theory is used of the mental coordination of facts and principles, that may or may not prove correct; a machine may be perfect in theory, but useless in fact. Scheme may be used as nearly equivalent to theory, but is more frequently applied to proposed action, and in the sense of a somewhat visionary plan. A speculation may be wholly of the brain, resting upon no facts worthy of consideration; system is the highest of these terms, having most of assurance and fixity; a system unites many facts, phenomena, or doctrines into an orderly and consistent whole; we speak of a system of theology, of the Copernican system of the universe. Compare SYSTEM.

    Synonyms:
    conjecture, guess, hypothesis, scheme, speculation, supposition, surmise, system

    Antonyms:
    certainty, demonstration, discovery, evidence, fact, proof

Complete Dictionary of Synonyms and Antonyms

  1. theory

    Synonyms:
    speculation, assumption, doctrine, scheme, system, supposition, hypothesis, plea

    Antonyms:
    fact, truth

Princeton's WordNet

  1. theorynoun

    a well-substantiated explanation of some aspect of the natural world; an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena

    "theories can incorporate facts and laws and tested hypotheses"; "true in fact and theory"

    Synonyms:
    possibility, hypothesis

  2. hypothesis, possibility, theorynoun

    a tentative insight into the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena

    "a scientific hypothesis that survives experimental testing becomes a scientific theory"; "he proposed a fresh theory of alkalis that later was accepted in chemical practices"

    Synonyms:
    possibleness, surmisal, hypothesis, possibility, opening, guess, conjecture, possible action, supposition, surmise, speculation

  3. theorynoun

    a belief that can guide behavior

    "the architect has a theory that more is less"; "they killed him on the theory that dead men tell no tales"

    Synonyms:
    possibility, hypothesis

Matched Categories

Dictionary of English Synonymes

  1. theorynoun

    Synonyms:
    speculation, hypothesis, assumption, conjecture, postulate, plan, scheme, system

  2. theorynoun

    Synonyms:
    science, philosophy, doctrine, abstract principles

  3. theorynoun

    Synonyms:
    exposition, rationale, reason

Synonyms, Antonyms & Associated Words

  1. theorynoun

    Synonyms:
    hypothesis

How to pronounce theory?

How to say theory in sign language?

Words popularity by usage frequency

rankingword
#136system
#1649theory
#2265opening
#2773guess
#2803scheme
#4175possibility
#4225principle
#5989thesis
#6019theoretical
#6758theories
#7150assumption
#8627hypothesis
#8637doctrine
#12702plea
#14041speculation
#22312doctrines
#22736conjecture
#48037supposition
#66872surmise
#74739theorie
#96995teoria

How to use theory in a sentence?

  1. Mark Ridley, 1983:

    The theory of evolution is outstandingly the most important theory in biology.

  2. Stephen Jay Gould:

    “The literal record was not a hopelessly and imperfect fraction of truly insensible gradation within large populations but an accurate reflection of the actual process identified by evolutionists as the chief motor of biological change. The theory of punctuated equilibrium was, in its initial formulation, little more than this insight adumbrated.”

  3. Marilyn Hueper:

    I said, ‘Oh, so it was stolen and it’s at large, good to know. I thought maybe it was just conspiracy theory, so thanks for the intel,’.

  4. Peter Daszak:

    I think that's right. There's not been a definitive investigation of the lab-leak theory, will there be?

  5. Carrie Severino:

    What Justice Scalia is referring to is the 'mismatch theory' popularized by Stuart Taylor and Richard Sander in their book, the idea is that if a student is admitted to a school they are not academically prepared for then they will not perform up to their own potential. This is a theory -- contested of course -- but I don't want people to get the idea that it means that all black students are not as smart as white students, or even that they are not as well prepared across the board.


Translations for theory

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"theory." Synonyms.com. STANDS4 LLC, 2022. Web. 12 Aug. 2022. <https://www.synonyms.com/synonym/theory>.

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    What is the synonym of Altercation?
    • A. Argument
    • B. Agree
    • C. Ignominy
    • D. Concur

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