Slight hint maybe (4)
I believe the answer is:
thin
'slight' is the definition.
(I know that slight can be written as thin)
'hint maybe' is the wordplay.
'maybe' is an anagram indicator.
'hint' anagrammed gives 'THIN'.
(Other definitions for thin that I've seen before include "Skinny" , "Slender, slight" , "Fine" , "Slim - watery" , "Dilute; lean" .)