ξύνοισις

From LSJ

ὕδωρ δὲ πίνων οὐδὲν ἂν τέκοι σοφόν → by drinking water you would never create anything great

Source

Russian (Dvoretsky)

ξύνοισις: εως ἡ предполож. состав (τοῦ παίωνος Plut. - v. l. ξύνθεσις).