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Related to gussy: gussy up
tr.v. gus·sied, gus·sy·ing, gus·sies Slang
To dress or decorate elaborately; adorn or embellish: gussied herself up in sequins and feathers.
[Perhaps from Australian slang gussie, an effeminate man, from Gussie, diminutive of the personal name Augustus.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
v. -sied, -sy•ing. Informal. v.t.
1. to adorn or decorate in a gimmicky, showy manner (usu. fol. by up): to gussy up a room with mirrors and lights.v.i.
2. to dress in one's best clothes (usu. fol. by up).
[1950–55; of obscure orig.]
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