Abroad as ever so horrible (8)
I believe the answer is:
overseas
'abroad' is the definition.
(I've seen this before)
'as ever so horrible' is the wordplay.
'horrible' indicates an anagram.
'as'+'ever'+'so'='aseverso'
'aseverso' with letters rearranged gives 'OVERSEAS'.
(Other definitions for overseas that I've seen before include "In foreign parts" , "Exotic" , "abroad - with 12a" , "In a foreign country" .)