3 adjectives to describe stealthiness

The very thought lent me strength and gave my feet cunning stealthiness.

With gentle stealthiness he drew from his belt an English knife, acquired at the time that he was skipper of a small boat,a shining blade which reproduced the faces of those looking at it, with the sharp point of a stiletto and the edge of a razor.

From this coign of vantage he returned after a time to take away the tea-things; and thereafter, though it was now dark as well as foggy, I could hear him softly flitting up and down the stairs with a gloomy stealthiness that at length reduced me to a condition as nervously apprehensive as his own.

3 adjectives to describe  stealthiness