Wish you were with younger woman? (4)
I believe the answer is:
miss
'woman?' is the definition.
(miss is a kind of woman)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for miss that I've seen before include "Fail to perceive" , "Don't hit" , "Austria/Italy region" , "Damsel" , "Lass" .)