clean·ly 
/ˈklɛnli/ adverb
/ˈklɛnli/ adverb [more cleanly; most cleanly] : in a clean manner: such as a : easily and completely
▪ A sharp knife will cut through the skin of a tomato cleanly.
b : without causing pollution
▪ This fuel burns more cleanly than other fuels.
▪ A sharp knife will cut through the skin of a tomato cleanly.
b : without causing pollution
▪ This fuel burns more cleanly than other fuels.
