unteach

[ uhn-teech ]
/ ʌnˈtitʃ /

verb (used with object), un·taught, un·teach·ing.

to cause to be forgotten or disbelieved, as by contrary teaching.
to cause to forget or disbelieve something previously taught.

Origin of unteach

First recorded in 1525–35; un-2 + teach

Example sentences from the Web for unteach

British Dictionary definitions for unteach

unteach
/ (ʌnˈtiːtʃ) /

verb -teaches, -teaching or -taught (tr) rare

to cause to disbelieve (teaching)