συνοίομαι
From LSJ
Περὶ τοῦ ἐπέκεινα τοῦ νοῦ κατὰ μὲν νόησιν πολλὰ λέγεται, θεωρεῖται δὲ ἀνοησίᾳ κρείττονι νοήσεως → On the subject of that which is beyond intellect, many statements are made on the basis of intellection, but it may be immediately cognised only by means of a non-intellection superior to intellection
English (LSJ)
aor. -ῳήθην,
A hold the same opinion, assent, ἐγὼ . . σ. Pl. R.500a; εἰ . . αὐτὸς μὲν ᾤετο, τὸ δὲ πλῆθος μὴ σ. Id.Tht.171a: with neut. pron., αὐτὸ τοῦτο σ. assent to . ., Id.R.500b; καὶ τόδε συνοιήθητι ib.517c.