Reluctant poet's work after first of April (6)

I believe the answer is:

averse

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'reluctant' is the definition.
(averse can mean reluctant or opposing)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for averse that I've seen before include "Antipathetic" , "Disinclined, loath" , "A piece of poetry is reluctant" , "Not keen" , "Disinclined or reluctant" .)

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