God turning up in Lesser Antilles (4)
I believe the answer is:
ares
'god' is the definition.
(Greek god of war)
'turning up in lesser antilles' is the wordplay.
'turning up' says the letters should be written in reverse.
'in' indicates a hidden word.
'sera' is hidden within 'lesser antilles'.
'sera' written backwards gives 'ARES'.
(Other definitions for ares that I've seen before include "Land measures" , "figure of worship" , "Belligerent god" , "Greek god of war" , "Olympian" .)