In flight and Up

In flight

In flight adverb - Flying through the air.
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Synonyms for In flight

Up and in flight are semantically related. In some cases you can use "Up" instead an adverb phrase "In flight".

Up

Up adverb - Spatially or metaphorically from a lower to a higher position.

In flight and up are semantically related. Sometimes you can use "In flight" instead an adverb "Up".
Cite this Source
Up and In flight. (2016). Retrieved 2026, August 02, from https://thesaurus.plus/related/in_flight/up
In flight & Up. N.p., 2016. Web. 02 Aug. 2026. <https://thesaurus.plus/related/in_flight/up>.
Up or In flight. 2016. Accessed August 02, 2026. https://thesaurus.plus/related/in_flight/up.
Google Ngram Viewer shows how "in flight" and "up" have occurred on timeline