22 across
Nasty
and
perhaps
guilty,
wearing
fake
suntan
(10)
Nasty and perhaps guilty, wearing fake suntan (10)
hints
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checks
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hints
The definition is at the beginning of the clue.
How the clue works
The definition is Nasty. "Fake" tells you to anagram suntan into UNTANS, then "perhaps guilty" gives you PLEA (as in a guilty plea), and that gets tucked inside ("wearing") the anagram to give you UN + PLEA + SANT.