Erinnerer

From LSJ

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

Source

German > Latin

Erinnerer, monitor. admonitor (doch stets mit – dem Nbbegr. der Warnung, Ermahnung).