gussy up
Synonym discussion
Sense: phrasal verb/1
While all these phrasal verbs describe making someone or something look more attractive, they differ in register and tone. 'Dress up' is the most neutral and broadly applicable — it works for people, places, or objects without added judgment. 'Gussy up' is distinctly informal and often carries a playful or gently mocking tone, suggesting the effort is a bit excessive or showy. 'Doll up' is similarly informal but typically limited to women and girls, with an extra layer of feminine styling. 'Glam up' is more recent slang focused on glamorous, Hollywood-style transformation. 'Smarten up' is more common in British English and implies tidying and neatening rather than flashy decoration. For example: 'She dressed up for the interview' sounds neutral; 'She gussied herself up as if she were walking a red carpet' sounds playfully exaggerated.
Etymology
The exact origin of 'gussy up' is uncertain. One theory traces it to 'gusset' — a small triangular piece of fabric sewn into clothing to improve the fit and appearance. Another suggestion links it to Yiddish 'gitsn' (to adorn) or German 'Guss' (a cast or mould). The phrase first appeared in American English around the early 1900s and has remained informal ever since.
First known use
1906
1906, in the meaning defined above