Opposite in poetry (7)

I believe the answer is:

inverse

'opposite' is the definition.
(I know that opposite can be written as inverse)

'in poetry' is the wordplay.
'poetry' becomes 'verse' (synonyms).
'in'+'verse'='INVERSE'

(Other definitions for inverse that I've seen before include "A direct opposite" , "The exact opposite of enviers" , "Transposed" , "Antonym" , "Contrary in effect" .)

I've seen this clue in The Sun.

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