IPA: /ˈoʊvərˌdrɛst/
KK: /ˈoʊvərˌdrɛst/
Wearing clothes that are too formal or fancy for a particular occasion.
She felt overdressed at the casual picnic in her elegant gown.
Comparative: more overdressed
Superlative: most overdressed
Overdressed → It is formed from "over-" (meaning excessively) and "dress" (from Old French *drecier*, meaning to arrange or put on). The word "overdressed" means dressed excessively or more than what is appropriate for the occasion.
Think of being dressed 'excessively' ('over-') — that's why overdressed means wearing too much or too fancy for the situation.
No commonly confused words.