Tiptoe (5)
(Other definitions for steal that I've seen before include "Thieve" , "bargain?" , "Take unlawfully" , "crib" , "Take illegally" .)
'tiptoe' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for creep that I've seen before include "Move furtively" , "Unpleasant person; develop slowly" , "Slink" , "Move with stealth" , "Fawn" .)