WordWeb Online

1. Dress too warmly
   "You should not overdress the child--she will be too hot";
   - overclothe
    
2. Put on special clothes to appear particularly appealing and attractive
   "She never overdresses, even when she goes to the opera";
   - dress up, fig out [informal], fig up [informal], deck up, gussy up [N. Amer, informal], fancy up [informal], trick up, deck out, trick out, prink, attire, get up, rig out, tog up [informal], tog out [informal], doll up [informal]

Derived forms: overdresses, overdressed, overdressing

Type of: apparel, clothe, dress, enclothe, fit out, garb, garment, get dressed, habilitate [archaic], raiment [archaic], tog [informal]

Antonym: underdress