Never hit an unmarried woman (4)
I believe the answer is:
miss
'unmarried woman' is the definition.
(as opposed to Mrs)
'never hit an' is the wordplay.
I cannot quite see how this works, but
'an' could be 'i' (Roman numeral for one) and 'i' is found within the answer.
The remaining letters 'mss' is a valid word which might be clued in a way I don't understand.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for miss that I've seen before include "Don't hit" , "Feel the absence of" , "Fail to get" , "Fail to locate" , "Suffer from the lack of" .)