δραπέτων

From LSJ

γελᾷ δ' ὁ μωρός, κἄν τι μὴ γέλοιον ᾖ → the fool laughs even when there's nothing to laugh at

Source

Spanish (DGE)

-ονος, ὁ
despect. esclavo fugitivo, SB 10841.13 (IV d.C.). Cf. δράπων.