Reluctance to move one near it, somehow (7)
I believe the answer is:
inertia
'reluctance to move' is the definition.
(I've seen this before)
'one near it somehow' is the wordplay.
'one' becomes 'i' (Roman numeral).
'somehow' indicates anagramming the letters.
'near'+'it'='nearit'
'nearit' anagrammed gives 'nertia'.
'i'+'nertia'='INERTIA'
(Other definitions for inertia that I've seen before include "Disinclination to change" , "Lack of activity" , "Listlessness" , "Way of selling" , "Tendency to remain at rest or in steady motion" .)