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in theory

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hypothetic adj.
speculative adj.
theoretic adj.
theoretical adj.

ADJECTIVE

hypothetic

Synonyms

WEAK

abstract academic analytical as a premise assumed codified conjectural contingent formalistic formularized general hypothetical ideal idealized ideational ideological imaginative impractical in the abstract instanced intelle

ADJECTIVE

speculative

Synonyms

STRONGEST

analytical dangerous experimental hypothetical risky unproved unproven unsubstantiated

WEAK

abstract assumed conceptive dicey formularized hairy hazardous ideal idealized ideological iffy intellectual logical notional philosophical presumed uncertain

Antonyms

STRONGEST

proven safe

ADJECTIVE

theoretic

Synonyms

WEAK

abstract academic analytical as a premise assumed codified conjectural contingent formalistic formularized general hypothetic hypothetical ideal idealized ideational ideological imaginative impractical in the abstract instanced intellectual logical metaphysical notional on paper pedantic philosophical postulated presumed problematical pure quixotic speculative suppositional tentative transcendent transcendental unearthly unproved unsubstantiated vague

ADJECTIVE

theoretical

Synonyms

STRONGEST

abstract academic analytical imaginative intellectual logical metaphysical philosophical speculative vague

WEAK

as a premise assumed codified conjectural contingent formalistic formularized general ideal idealized ideational ideological impractical in the abstract instanced notional on paper pedantic postulated presumed problematical pure quixotic suppositional tentative transcendent transcendental unearthly unproved unsubstantiated

Antonyms

STRONGEST

concrete ignorant illogical material objective physical real simple

WEAK

certain definite factual proven

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

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in theory

Scientists had previously predicted an in-plane anomalous Hall effect in theory, but no experiment had successfully demonstrated it before this work.

From Science Daily ● Sep. 3, 2026

If Ohtani doesn’t pitch Sunday, Tuesday, likely before left-hander Eric Lauer, could in theory be an option.

From Los Angeles Times ● Aug. 29, 2026

Should Meta fail to address its concerns, the EU can in theory impose a fine of up to six percent of the company's total worldwide annual turnover.

From Barron's ● Aug. 27, 2026

School used to be, in theory, the one place a young person got to stay illegible.

From Slate ● Aug. 21, 2026

You already know all there is to know in theory.

From "The Diary of a Young Girl" by Anne Frank

in theory

Example Sentences

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