Improbable and Valid

Opposite meaning words

Improbable adjective - Not likely to be true or to occur.

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Valid is an antonym for improbable.

Nearby Words: improbability, improbably

Valid adjective - According to the rules of logic.

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Improbable is an antonym for valid in right topic.

Nearby Words: validity, validation

As long as a theory at least sounds like a theory, we'll assume that it's valid, no matter how improbable, contradictory or even Jossed it is.

Source: Wild Mass Guessing aka: Home Page

Cite this Source

Valid and Improbable. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/improbable/valid

Improbable & Valid. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/improbable/valid>.

Valid or Improbable. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/improbable/valid.

Google Ngram Viewer shows how "improbable" and "valid" have occurred on timeline