Amiable (8)
'amiable' is the definition.
(similar in meaning)
This is the entire clue.
(Other definitions for friendly that I've seen before include "Kind, pleasant" , "Amicable, favourably disposed" , "prepared to talk to fellow passengers?" , "Sociable" , "Affable" .)
(Other definitions for likeable that I've seen before include "Oxford college" , "Nice" , "Easy to warm to, attractive" , "Pleasant" , "Winsome" .)