unteach
(verb) cause to disbelieve; teach someone the contrary of what he or she had learned earlier
unteach
(verb) cause to unlearn; “teach somebody to unlearn old habits or methods”
Source: WordNet® 3.1
unteach (third-person singular simple present unteaches, present participle unteaching, simple past and past participle untaught)
(transitive) To cause someone to unlearn; to make someone forget something they have been taught.
(transitive) To cause something previously learned to be forgotten.
• Cauthen
Source: Wiktionary
Un*teach", v. t. Etym: [1st pref. un- + teach.]
1. To cause to forget, or to lose from memory, or to disbelieve what has been taught. Experience will unteach us. Sir T. Browne. One breast laid open were a school Which would unteach mankind the lust to shine or rule. Byron.
2. To cause to be forgotten; as, to unteach what has been learned. Dryden.
Source: Webster’s Unabridged Dictionary 1913 Edition
4 April 2025
(verb) kill by cutting the head off with a guillotine; “The French guillotined many Vietnamese while they occupied the country”
The first coffee-house in Mecca dates back to the 1510s. The beverage was in Turkey by the 1530s. It appeared in Europe circa 1515-1519 and was introduced to England by 1650. By 1675 the country had more than 3,000 coffee houses, and coffee had replaced beer as a breakfast drink.