1) Brainwash 2) Cause to disbelieve 3) Cause to forget 4) Cause to unlearn 5) Instruct 6) Learn 7) Teach 8) To cause someone to unlearn 
• (v. t.) To cause to be forgotten; as, to unteach what has been learned. • (v. t.) To cause to forget, or to lose from memory, or to disbelieve what has been taught.
[v] - cause to unlearn 2. [v] - cause to disbelieve
to cause to be forgotten or disbelieved, as by contrary teaching. · to cause to forget or disbelieve something previously taught.