τυμβείτης

From LSJ

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

Source

Greek Monolingual

ὁ, Α
(δ. τ.) βλ. τυμβίτης.