What does the cryptic crossword clue "In retirement, a wonderful person resists huge amounts of cash (9)" mean?

The wordplay uses a reversal. MEGA (synonym="MEGA") + BUCKS (synonym="‘resists’") = MEGABUCKS The answer is MEGABUCKS.

In retirement, a wonderful person resists huge amounts of cash (9)

Guardian Cryptic #29633 | 9 Across | 2025-03-04 flower