Important and Ineffective

Important

Important adjective - Having great power or influence.
Usage example: Rachel Carson was an important figure in the environmental movement

Ineffective is an antonym for important in eminent topic.

Ineffective

Ineffective adjective - Not producing the desired result.

Important is an antonym for ineffective.

Cite this Source
Ineffective and Important. (2016). Retrieved 2026, July 21, from https://thesaurus.plus/related/important/ineffective
Important & Ineffective. N.p., 2016. Web. 21 Jul. 2026. <https://thesaurus.plus/related/important/ineffective>.
Ineffective or Important. 2016. Accessed July 21, 2026. https://thesaurus.plus/related/important/ineffective.
Google Ngram Viewer shows how "important" and "ineffective" have occurred on timeline