What does the cryptic crossword clue "Outrage as a Guardian setter's reported (5)" mean?

The definition is "Outrage". The wordplay uses a homophone (sounds like). Sounds like (‘reported’) A PAUL (‘a Guardian setter’). The answer is APPAL.

Outrage as a Guardian setter's reported (5)

Guardian Cryptic #28938 | 24 Down | 2022-12-12 flower