Functional and Ineffective

Opposite meaning words

Functional adjective - Being in effective operation.

Usage example: I don't think that vending machine is functional, so don't put money into it

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Ineffective is an antonym for functional.

Ineffective adjective - Producing no results.

Usage example: an ineffective medication that will be denied FDA approval

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Functional is an antonym for ineffective.

Cite this Source

Ineffective and Functional. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/functional/ineffective

Functional & Ineffective. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/functional/ineffective>.

Ineffective or Functional. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/functional/ineffective.

Google Ngram Viewer shows how "functional" and "ineffective" have occurred on timeline