Etymologically
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idiotic

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Pronunciation

  • UK: /ˌɪdiˈɒtɪk/[1]
  • US: /ˌɪdiˈɑtɪk/[1]

Etymology

It is borrowed from Late Latin idiōticus (“uneducated, ignorant, unskilled”),[2][3][4][5] in classical Latin "of an ordinary person",[6][2] from Ancient Greek ἰδιωτικός (idiōtikós, “private, unprofessional, unskilled; uneducated”),[6][3][7] from ἰδιώτης (idiṓtēs, “private person, layman, unskilled person”),[6][4][2] itself from ἴδιος (ídios, “one's own, private”).[4][8] The OED and Etymonline also allow that it was formed from English idiot + -ic,[7][6] and the Shorter Oxford takes it as formed from the noun after the Greek or Latin adjective.[9]

Earliest recorded meaning

Characteristic of an idiot; extremely stupid or foolish: 1659, in H. More's Immortality of the Soul.[7][3] Barnhart and Etymonline date the word to 1713,[2][6] the Shorter Oxford to the early 18th century,[9] and Dictionary.com to 1705–15.[5]

Semantic evolution

The Greek adjective meant private or unprofessional, and also uneducated or vulgar, because an idiōtēs was a private person as against one who took part in public affairs, and so a layman without special skill.[6][8] In Late Latin idioticus meant uneducated or ignorant,[2][6] but the English adjective took its sense from idiot, which already meant a feeble-minded person before 1325.[2][7] The longer form idiotical is recorded from the 1640s,[6][5] and the OED compares it and idiotish as earlier words.[7]

Timeline

  • 1640s – idiotical, the longer form.[6]
  • 1659 – characteristic of an idiot; extremely stupid or foolish.[7][3] Barnhart and Etymonline date the word to 1713.[2][6]

Meanings

Adjective

  1. Extremely stupid or foolish; senseless: Leaving the stove on all night was an idiotic thing to do.[10][3][7]
  2. Like or characteristic of an idiot.[10][3][9]

Word family

  • idiotically
  • idioticalness

References

  1. ^ a b Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  3. ^ a b c d e f Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  4. ^ a b c Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  5. ^ a b c Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  6. ^ a b c d e f g h i j Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  7. ^ a b c d e f g Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  8. ^ a b Ayto, John (2005), Word Origins: The Secret Histories of English Words from A to Z, 2nd ed., London: A & C Black
  9. ^ a b c Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  10. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins