νοεῖν γάρ ἐστι κρεῖττον καὶ σιγὴν ἔχειν → it's better, you see, to understand and yet say nothing (Menander)
adj.
See secret.
Make veiled allusion to: Ar. and P. αἰνίσσεσθαι (acc. or εἰς, acc.); see hint at.