I.v. a., to cause one to unlearn something, to unteach, teach the opposite of (rare, but class.).
(α).
With double acc.: “aliquem geometriam,” Cic. Fin. 1, 6, 20: “regnorum gaudia temet,” Stat. Th. 2, 409.—*
(γ).
Pass.: “cum aut docendus is est aut dedocendus,” Cic. de Or. 2, 17, 72: “cum a Zenone fortis esse didicisset, a dolore dedoctus est,” id. Tusc. 2, 25, 60. In the gerund absol.: “onus dedocendi gravius quam docendi,” Quint. 2, 3, 2: “ut coercendi magis quam dedocendi esse videantur,” id. Fin. 1, 16, 51.