What does the cryptic crossword clue "Wow with crazy somersaulting (4)" mean?

The definition is "Wow". The wordplay uses a reversal. NUTS (reversal="crazy") = STUN; definition: "Wow" The answer is STUN.

Wow with crazy somersaulting (4)

Times Cryptic #28631 | 14 Across | 2023-06-16 flower