Goddess in Greek, I never retreated (4)
I believe the answer is:
nike
'goddess' is the definition.
(I have seen 'Goddess of victory ' mean 'nike' so perhaps 'goddess' could also mean 'nike')
'in greek i never retreated' is the wordplay.
'in' indicates a hidden word.
'retreated' says the letters should be written in reverse (I've seen 'retreat' mean this).
'ekin' can be found hidden inside 'greek i never'.
'ekin' written backwards gives 'NIKE'.
(Other definitions for nike that I've seen before include "Greek goddess, personification of victory" , "Victoria" , "bringer of victory" , "Greek winged goddess of victory, and sports goods logo" , "Goddess of victory - clothing company" .)