Fly by night
Unfirm and fly by night are semantically related. In some cases you can use "Unfirm" instead an adjective phrase "Fly by night".
Unfirm
Unfirm adjective - Not firmly or solidly positioned.
Fly by night and unfirm are semantically related. Sometimes you can use "Fly by night" instead an adjective "Unfirm".
Cite this Source
Unfirm and Fly by night. (2016). Retrieved 2026, August 10, from https://thesaurus.plus/related/fly_by_night/unfirm
Fly by night & Unfirm. N.p., 2016. Web. 10 Aug. 2026. <https://thesaurus.plus/related/fly_by_night/unfirm>.
Unfirm or Fly by night. 2016. Accessed August 10, 2026. https://thesaurus.plus/related/fly_by_night/unfirm.