What does the cryptic crossword clue "Wannabe holy person, certainly not corrupt! (9)" mean?

The wordplay uses a charade (building blocks). NO (synonym="NO") + VITIATE (synonym="to spoil or “corrupt”") = NOVITIATE The answer is NOVITIATE.

Wannabe holy person, certainly not corrupt! (9)

Guardian Cryptic #29510 | 25 Across | 2024-10-10 flower