Effective and Idle

Effective

Effective adjective - Producing or capable of producing a desired result.
Usage example: an effective treatment of the once-dreaded disease

Idle is an antonym for effective.

Idle

Idle adjective - Not being in a state of use, activity, or employment.

Effective is an antonym for idle in topics: useless, worthless.

Nearby Words: idled, idleness, idler, idling, idly
Cite this Source
Idle and Effective. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/effective/idle
Effective & Idle. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/effective/idle>.
Idle or Effective. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/effective/idle.
Google Ngram Viewer shows how "effective" and "idle" have occurred on timeline