D defs.my
Entry 1 sense Webster, 1913

overdress

/ōv'-ẽrd-rĕsˌ/ · o·ver·dress · IPA /ˈoʊvərdrˌɛs/
01 v. t. To dress or adorn to excess; to dress too much; to dress too formally for an informal occasion.
  1. 1.
    To dress or adorn to excess; to dress too much; to dress too formally for an informal occasion.