cunning person; crafty person
Archaic derogatory term for a sly or scheming individual. Not used in modern everyday speech; may appear in historical texts or period fiction.
That man was a born schemer, and no one trusted him.
The kanji 黠 (katsu) means 'crafty' or 'cunning', and 奴 (do) is a derogatory suffix for a person. The exact historical derivation is uncertain, but the compound is an old Chinese-style formation.