Definition of overdressed in US English:

overdressed

adjective

  • Dressed in a way that is too elaborate, ostentatious, or formal for a particular situation.

    ‘she felt wildly overdressed in her velvet suit’
    ‘you can never be too overdressed for a trip to the races’

Pronunciation

overdressed

/ˌoʊvərˈdrɛst//ˌōvərˈdrest/