Become a parent, returning in derision (4)
I believe the answer is:
sire
'become a parent' is the definition.
I can't tell whether this definition defines the answer.
'returning in derision' is the wordplay.
'returning' says the letters should be written backwards.
'in' indicates a hidden word.
'eris' is hidden in the letters of 'derision'.
'eris' written backwards gives 'SIRE'.
Can you help me to learn more?
(Other definitions for sire that I've seen before include "Ancestor" , "Bear" , "Generator" , "Old form of address to king - rise to it" , "Male parent of an animal" .)