unbuoyantadj.
Origin: Formed within English, by derivation. Etymons: un- prefix1, buoyant adj.
Etymology: < un- prefix1 + buoyant adj.Previous versions of the OED give the stress as: unˈbuoyant.
the world > the earth > water > body of water > [adjective] > able to be floated on > not
1866 J. B. Rose tr. Ovid 1 Unfirm the earth, unbuoyant was the wave.
This entry has not yet been fully updated (first published 1921; most recently modified version published online March 2021).