'dressed-up' definitions:

Definition of 'dressed-up'

From: WordNet
adjective
Dressed in fancy or formal clothing [syn: dressed(p), dressed-up, dressed to the nines(p), dressed to kill(p), dolled up, spruced up, spiffed up, togged up]

Definition of 'dressed-up'

From: GCIDE
  • dressed-up \dressed-up\ adj. attired in fancy or formal clothing. [Narrower terms: dressed to kill(predicate)]
  • Syn: dressed to the nines(predicate), dolled up, spruced up, spiffed up. [WordNet 1.5]