ἀπηγορέω

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)

defender op. κατηγορεῖν Simp.in Cat.17.2
en v. med. defenderse πρὸς ἃ δεῖ αὐτὸν ἀπηγορεῖσθαι Arist.Pr.951a23.