A move not entirely appropriate (7)
I believe the answer is:
apropos
'appropriate' is the definition.
(associated in meaning)
'a move not entirely' is the wordplay.
'move' becomes 'propose' (as in to move or propose a motion in a meeting).
'not entirely' means to remove the last letter.
'propose' with its final letter removed is 'propos'.
'a'+'propos'='APROPOS'
(Other definitions for apropos that I've seen before include "Concerned with" , "On the subject of" , "well-chosen" , "With reference to, concerning" , "To the point, relevant" .)