The most common and most likely answer to this crossword clue is the 7 letter word UNDRESS
I've seen this crossword clue in The Daily Telegraph
U
N
D
R
E
S
S
More clues leading to the result UNDRESS
- Take off something worn in warm weather – not initially
- Strip or uniform associated with northern outfit
- Cleaner scrubbing US city strip
- Take clothes off washerwoman abandoning US city
- Strip? Kinky nurses do, almost
- Diabolical ruses employed to get around North Dakota, “The Altogether State”
- Strip of red sun’s set
- Posh Bond girl that’s torn off a strip
- Peacekeeping outfit seen in strip
- Upper-class original Bond girl having taken top off is déshabillé
Buddy explains!

The straight part
We know that "strip" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case strip = undress.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does UNDRESS mean?
UNDRESS noun- Partial or informal dress for women, as worn in the home rather than in public.
- Informal clothing for men, as opposed to formal or ceremonial wear.
- Now more specifically, a state of having few or no clothes on.
- To remove one's clothing.
- To remove one’s clothing.
- To remove the clothing of (someone).
- To strip of something.
- To take the dressing, or covering, from.