Effectual and Uneffective

Opposite meaning words

Effectual adjective - Producing or capable of producing an intended result or having a striking effect.

Usage example: his complaint proved to be effectual in bringing action

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Uneffective is an antonym for effectual.

Uneffective adjective - Not producing an intended effect.

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Effectual is an antonym for uneffective.

Cite this Source

Uneffective and Effectual. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/effectual/uneffective

Effectual & Uneffective. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/effectual/uneffective>.

Uneffective or Effectual. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/effectual/uneffective.

Google Ngram Viewer shows how "effectual" and "uneffective" have occurred on timeline