Effective and Not serious

Opposite meaning terms

Effective adjective - Producing or capable of producing a desired result.

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Not serious is an antonym for effective.

Definitions of Effective not found.

Effective is an antonym for not serious in worthless topic.

Cite this Source

Not serious and Effective. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/effective/not_serious

Effective & Not serious. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/effective/not_serious>.

Not serious or Effective. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/effective/not_serious.

Google Ngram Viewer shows how "effective" and "not serious" have occurred on timeline