Green’s Dictionary of Slang

cat-footed adj.

stealthy.

1884		Sun (NY) 1 June 8/6: But, cat-footed as he was, she had heard him.
1939		K. Tennant Foveaux 48: He was not too heavy to move with cat-footed speed if he had an urgent reason for it.
1956		C.S. Lewis Till We Have Faces 292: Why, every wheedling, smiling, catfoot rogue who lures away another man’s wife or slave or dog might say the same.