ἀντιθετέον
From LSJ
παρθενικὴν δὲ γαμεῖν, ἵνα ἤθεα κεδνὰ διδάξῃς → take thee a maiden to wife, and teach her ways of discretion
English (LSJ)
A one must oppose, πρός τι ὅτι . . Arist.Pol.1286b2.
Greek (Liddell-Scott)
ἀντιθετέον: ῥημ. ἐπίθ. τοῦ ἀντιτίθημι, πρέπει τις νὰ ἀντιτάξῃ, τι πρός τι Ἀριστ. Πολιτικ. 3. 15, 10.
Spanish (DGE)
hay que oponer πρὸς τοῦτ' ἀ. ... ὅτι Arist.Pol.1286b2.