πλανευτής

From LSJ

κέρκος τῇ ἀλώπεκι μαρτυρεῖ → you can tell a fox by its tail, small traits give the clue to the character of a person

Source

Greek Monolingual

ο, θηλ. πλανεύτρα, Ν πλανεύω
αυτός που παραπλανά, πλάνος, απατηλός.