UNTAUGHT
unschooled, untaught, untutored
(adjective) lacking in schooling; “untaught people whose verbal skills are grossly deficient”; “an untutored genius”; “uneducated children”
UNTEACH
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
Etymology
Adjective
untaught (comparative more untaught, superlative most untaught)
Not taught; uneducated.
(not comparable) Not taught; not conveyed by means of instruction.
Synonyms
• See also ignorant
Source: Wiktionary
UNTEACH
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