In gear and In operation

In gear

In gear adjective - Having gears engaged.

In operation and in gear are semantically related. In some cases you can use "In operation" instead an adjective phrase "In gear".

In operation

In operation adjective - Being in effect or operation.

In gear and in operation are semantically related. Sometimes you can use "In gear" instead an adjective phrase "In operation".
Cite this Source
In operation and In gear. (2016). Retrieved 2026, August 01, from https://thesaurus.plus/related/in_gear/in_operation
In gear & In operation. N.p., 2016. Web. 01 Aug. 2026. <https://thesaurus.plus/related/in_gear/in_operation>.
In operation or In gear. 2016. Accessed August 01, 2026. https://thesaurus.plus/related/in_gear/in_operation.
Google Ngram Viewer shows how "in gear" and "in operation" have occurred on timeline