undressEnglishOxford American Thesaurusundress verb 1 he undressed and got into bed: take one's clothes off, strip, strip naked, disrobe, remove one's clothes, doff one's clothes, shed one's clothes, uncover oneself; informal peel off; dated divest oneself of one's clothes. 2 she undressed the little boy: take someone's clothes off, strip, unclothe, disrobe; dated divest someone of their clothes; literary disarray.noun she was wandering about her bedroom in a state of undress: nudity, nakedness, bareness; French déshabillé; informal one's birthday suit.