New husband is a stable man (5)
I believe the answer is:
groom
'new husband' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for groom that I've seen before include "school" , "Stableboy" , "Stable attendant" , "Recently-married man" , "Curry - husband-to-be" .)