verb (used with object), gus·sied, gus·sy·ing.
verb (used without object), gus·sied, gus·sy·ing.
Origin of gussy
verb -sies, -sying or -sied (tr, adverb)
Word Origin for gussy up
"to dress up or decorate in a showy way," 1952, American English slang, apparently from Gussy (1940), schoolyard slang name for an overly dressed person, perhaps related to gussie (1901) "effeminate man," and somehow connected to the nickname for Augusta and Augustus.