Not partial to a piece of poetry (6)

I believe the answer is:

averse

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'not partial' is the definition.
I can't tell whether this defines the answer.

'a piece of poetry' is the wordplay.
'piece of poetry' becomes 'verse' (I've seen this in another clue).
'a'+'verse'='AVERSE'

'to' acts as a link.

Can you help me to learn more?

(Other definitions for averse that I've seen before include "Not keen" , "Antipathetic" , "A line of poetry is opposed" , "Having a strong opposition (to)" , "Indisposed" .)

I've seen this clue in the Evening Standard.

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