συναίνεσις
From LSJ
καὶ τὸ σιγᾶν πολλάκις ἐστὶ σοφώτατον ἀνθρώπῳ νοῆσαι → and silence is often the wisest thing for a man to heed, and often is man's best wisdom to be silent, and often keeping silent is the wisest thing for a man to heed
English (LSJ)
εως, ἡ,
A approval, consent, assent, Ph.1.382, al., Plu. 2.258b; τοῦ βουλευτηρίου POxy.2110.8 (iv A.D.), cf. 506.54 (ii A.D.), etc.
German (Pape)
[Seite 997] ἡ, Zustimmung, Sp., wie Plut.
French (Bailly abrégé)
εως (ἡ) :
assentiment.
Étymologie: συναινέω.
Russian (Dvoretsky)
συναίνεσις: v. l. συναίνησις, εως ἡ одобрение, согласие Plut.