Opposite of how most poetry is written (7)
I believe the answer is:
inverse
'opposite' is the definition.
(I know that opposite can be written as inverse)
'how most poetry is written' is the wordplay.
I cannot really see how this works, but
'poetry' could be 'vers' (I've seen this before) and 'vers' is present in the answer.
The remaining letters 'ine' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
'of' acts as a link.
Can you help me to learn more?
(Other definitions for inverse that I've seen before include "Upside down - opposite in effect" , "Something the exact opposite of another" , "Opposite (like poetry?)" , "A direct opposite" , "Antonym" .)