ἀπτοίητος

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

Spanish (DGE)

-ον
1 intrépido, Αἰακός Nonn.D.22.355, Ἰησοῦς Nonn.Par.Eu.Io.19.17, cf. SIG 46.145.
2 adv. ἀπτοήτως intrépidamente θνῄσκειν Phalar.Ep.103.2.