Steal fawn (5)
I believe the answer is:
creep
I believe this clue is a double definition.
'steal' is the first definition.
('creep' can be a synonym of 'steal')
'fawn' is the second definition.
('creep' can be a synonym of 'fawn')
(Other definitions for creep that I've seen before include "Slow motion" , "worm" , "Move softly and slowly like slangy servile person" , "Sycophant" , "Slink" .)