Operating and Quiescent

Operating

Operating adjective - Being in effective operation.
Usage example: the only operating nuclear power plant in the state

Quiescent is an antonym for operating.

Quiescent

Quiescent adjective - Slow to move or act.

Operating is an antonym for quiescent.

Cite this Source
Quiescent and Operating. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/operating/quiescent
Operating & Quiescent. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/operating/quiescent>.
Quiescent or Operating. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/operating/quiescent.
Google Ngram Viewer shows how "operating" and "quiescent" have occurred on timeline