Active
In use
In use adjective - Currently being used.
Mutual synonyms
Both terms in one sentence
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Also falls into this due to the "active runway" comment - an active runway is the runway currently in use.
Source: Just Plane Wrong -
It's still in use as an active prison sitenote The old prison is currently a museum.
Source: Series / The Blacklist -
Chekhov's Volcano: The volcano is active, but some Steampunk-type machinery in use by the trolls keeps it from erupting.
Cite this Source
In use and Active. (2016). Retrieved 2026, August 16, from https://thesaurus.plus/related/active/in_use
Active & In use. N.p., 2016. Web. 16 Aug. 2026. <https://thesaurus.plus/related/active/in_use>.
In use or Active. 2016. Accessed August 16, 2026. https://thesaurus.plus/related/active/in_use.
Google Ngram Viewer shows how "active" and "in use" have occurred on timeline