γελᾷ δ' ὁ μωρός, κἄν τι μὴ γέλοιον ᾖ → the fool laughs even when there's nothing to laugh at
ἀκήριος, ἄπνοος, ἄπνους, ἄπνευστος, λιπόπνοος, λιπόπνους, νήϋτμος, ἄσφυκτος
