Hint, in fact, in German (5)
I believe the answer is:
tinge
'hint' is the definition.
(I've seen this before)
'in fact in german' is the wordplay.
'in' indicates the answer is hidden within the clue.
'TINGE' is hidden within 'fact in german'.
(Other definitions for tinge that I've seen before include "A slight shade of colour" , "Colour slightly; trace" , "Slight tint" , "show a bit of colour ?" , "Slight trace; colour" .)