Γελᾷ δ' ὁ μωρός, κἄν τι μὴ γέλοιον ᾖ → The fool laughs even when there's nothing to laugh at
πρωΐ, νεώνητος, νέον, τὸ νέον, νέως, νεωστί, ἔναγχος, προσφάτως, ὑπογυίως, ὑπογύως, ἀρτίως