/ Dictionary / Index U unteach: Meaning and Definition of Find definitions for: un•teach Pronunciation: (un-tēch'), [key] — -taught, -teach•ing. to cause to be forgotten or disbelieved, as by contrary teaching. to cause to forget or disbelieve something previously taught. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: unteach (Thesaurus) untaught untenable Related Content Daily Word Quiz: fidelity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language