ἀσώφρονος

From LSJ

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

Menander

Spanish (DGE)

-ον
1 inmoderado Chry.Hie.Enc.Io.B.13 (p.44.9).
2 adv. -ως sin moderación Sch.Ar.Pl.560.