Fawn to move stealthily (5)
I believe the answer is:
creep
I believe this is a double definition.
'fawn' is the first definition.
(synonyms)
'move stealthily' is the second definition.
(I've seen this before)
'to' is the link.
(Other definitions for creep that I've seen before include "Walk slowly, silently" , "grovel" , "Unpleasant person; develop slowly" , "Move softly and slowly like slangy servile person" , "Move slowly with body close to ground" .)