He's evidently up to fatherhood (3)
I believe the answer is:
dad
'he's evidently up to fatherhood' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'he's' is the wordplay.
I cannot quite understand how this works, but
'he' could be 'ad' and 'ad' is present in the answer.
A single letter 'd' remains 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 dad that I've seen before include "Pa" , "Mum's mate" , "Popular father - a palindrome" , "Father, in short" , "Old man" .)