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Webster 1828 Edition

Adj.

untaut'

Not taught; not instructed; not educated; unlettered; illiterate.

Unskilled; new; not having use or practice.

A tongue untaught to plead for favor.

untaught ‎(comparative more untaught, superlative most untaught)

Not taught; uneducated.
- 2005, Christine Alexander, ‎Juliet McMaster, The Child Writer from Austen to Woolf (page 58)
  The gazing, the spying, and the ability to divine the eternal in the vivid manifestations of nature, here attributed to the young child, seem to be realised in this relatively untaught child of the woods of Oregon.
(not comparable) Not taught; not conveyed by means of instruction.
- Manly Wade Wellman, School for the Unspeakable
  What they used to teach here
  Now goes untaught.