In operation and Ineffective

In operation

In operation adjective - Being in effect or operation.

Ineffective is an antonym for in operation in topics: active, in use at the time.

Ineffective

Ineffective adjective - Not producing the desired result.

In operation is an antonym for ineffective.

Cite this Source
Ineffective and In operation. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/in_operation/ineffective
In operation & Ineffective. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/in_operation/ineffective>.
Ineffective or In operation. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/in_operation/ineffective.
Google Ngram Viewer shows how "in operation" and "ineffective" have occurred on timeline