Remote island sold tea to be drunk (8)
I believe the answer is:
isolated
'remote' is the definition.
(both can mean far away)
'island sold tea to be drunk' is the wordplay.
'island' becomes 'i'.
'to be drunk' indicates anagramming the letters.
'sold'+'tea'='soldtea'
'soldtea' is an anagram of 'solated'.
'i'+'solated'='ISOLATED'
(Other definitions for isolated that I've seen before include "Cut off, remote" , "Off the beaten track" , "Remote, set apart" , "Placed apart from others" , "Alone, apart, detached" .)