What does the cryptic crossword clue "Exact payment for haven Gerald conserves (6)" mean?

The definition is "Exact". The wordplay uses a hidden word. Hidden in "exact payment for hAVEN GErald conserves" The answer is AVENGE.

Exact payment for haven Gerald conserves (6)

Independent Cryptic #11933 | 19 Across | 2025-01-07 flower