Γελᾷ δ' ὁ μωρός, κἄν τι μὴ γέλοιον ᾖ → The fool laughs even when there's nothing to laugh at
ἀναλγησία, δυσαισθησία, ἀπονάρκησις, ἀστοργία, ἀπάθεια, ἀγνωμοσύνη, ἀναισθησία, ἄτεγκτος