Far-off meteor (6)
I believe the answer is:
remote
'far' is the definition.
(similar in meaning)
'off meteor' is the wordplay.
'off' is an anagram indicator.
'meteor' with letters rearranged gives 'REMOTE'.
(Other definitions for remote that I've seen before include "Slight possibility" , "device used by couch potato?" , "Cold" , "Distant like meteor (6)" , "Detached" .)