Home › Words › U › upfloatupfloatupfloat means to float upward.EtymologyFrom up- + float.verbTo float upward.e.g.“The Robin whistles, gossamers upfloat” — 1881, Hardwicke Drummond Rawnsley, Sonnets at the English Lakes, page 26:Definitions & examples from Wiktionary (CC BY-SA 3.0).