The most common and most likely answer to this crossword clue is the 7 letter word NUDISTS
I've seen this crossword clue in The Guardian
N
U
D
I
S
T
S
More clues leading to the result NUDISTS
- Criticise “daft” clothes? They might
- People eager to drop habits?
- Things abandoned by those crazy about Orcus
- Studs in tatty clothing not for them
- Certain exhibitionists, possibly mad, seen around underground area?
- Perhaps exposed campers to insult, surrounded by fanatics
- They like stripping girl’s fruit stocks
- They are ready to reveal the bare facts
- When they’re busy, they’ve nothing on
- Daughter is among crazy people who make an exhibition of themselves?
Buddy explains!

The straight part
We know that "these" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case these = nudists.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 NUDISTS mean?
NUDISTS noun- A person who practices nudism.