Wind up our plan, it's not well liked (9)
I believe the answer is:
unpopular
'not well liked' is the definition.
The answer and definition are different parts of speech. However, adjectives and past participle verbs sometimes mean the same thing.
'wind up our plan' is the wordplay.
'wind' indicates anagramming the letters.
'up'+'our'+'plan'='upourplan'
'upourplan' anagrammed gives 'UNPOPULAR'.
'it's' acts as a link.
Can you help me to learn more?
(Other definitions for unpopular that I've seen before include "Not well-liked" , "having few friends" , "unlike 27 [IN FAVOUR]" , "Without general approval" , "not favoured" .)