Sloth and one near it disturbed (7)
I believe the answer is:
inertia
'sloth' is the definition.
(inertia can mean laziness or sloth)
'one near it disturbed' is the wordplay.
'one' becomes 'i' (Roman numeral).
'disturbed' indicates an anagram (the order of letters is disturbed).
'near'+'it'='nearit'
'nearit' with letters rearranged gives 'nertia'.
'i'+'nertia'='INERTIA'
'and' is the link.
(Other definitions for inertia that I've seen before include "Tendency not to act" , "Tendency to remain at rest or in steady motion" , "Unresponsiveness" , "Passiveness" , "Slowness to react" .)