undress

Short definition from Wiktionary

Verb

1. 1
   To remove one's clothing.
2. 2
   To remove one’s clothing.
3. 3
   To remove the clothing of (someone).
4. 4
   To strip something off.
5. 5
   To take the dressing, or covering, from.

Noun

1. 1
   Partial or informal dress for women, as worn in the home rather than in public.
2. 2
   Informal clothing for men, as opposed to formal or ceremonial wear.
3. 3
   Now more specifically, a state of having few or no clothes on.