In operation and Unworkable

In operation

In operation adjective - Being in effect or operation.

Unworkable is an antonym for in operation in realistic topic.

Unworkable

Unworkable adjective - Not capable of being put to use or account.

In operation is an antonym for unworkable.
Cite this Source
Unworkable and In operation. (2016). Retrieved 2026, August 15, from https://thesaurus.plus/related/in_operation/unworkable
In operation & Unworkable. N.p., 2016. Web. 15 Aug. 2026. <https://thesaurus.plus/related/in_operation/unworkable>.
Unworkable or In operation. 2016. Accessed August 15, 2026. https://thesaurus.plus/related/in_operation/unworkable.
Google Ngram Viewer shows how "in operation" and "unworkable" have occurred on timeline