What does the cryptic crossword clue "Sick patient naive doctor upset to some extent (7)" mean?

The definition is "Sick". The wordplay uses a hidden word. Hidden reversed in "sick patienT NAIVE Doctor upset to some extent" The answer is DEVIANT.

Sick patient naive doctor upset to some extent (7)

Times Cryptic #28874 | 19 Down | 2024-03-26 flower