Etymologically

Etymology and origin of the English word infatuate

Confidence
Established
Formation
Borrowing
First attested
1471 George Ripley, Compound of Alchymy More words from the 15th century
Borrowed from
Latin infatuatus
Ultimate origin
Latin fatuus

Pronunciation

  • /ɪnˈfætjuˌ(w)eɪt/, /ɪnˈfætʃuˌ(w)eɪt/[1]

Etymology

The adjective is borrowed from Latin īnfatuātus, the past participle of īnfatuō (“to make a fool of”),[2][3][4][5] formed from in- and fatuus (“foolish”).[4][6][7][8] The verb is from the adjective or from the Latin participial stem īnfatuāt-;[2][9] the American Heritage Dictionary takes the prefix as the causative in-,[6] Etymonline and Hoad as in- meaning "in".[4][7] Weekley compares French affoler and assoter, French verbs of the same meaning, and English dote and fond.[10] The Latin adjective is also the source of fatuous.[4][5]

Earliest recorded meaning

As an adjective, infatuated, besotted: 1471, in George Ripley's Compound of Alchymy.[2][3] The verb is first recorded in 1533, in Tyndale, meaning to turn counsels to folly, to show something up as foolish, to frustrate.[2][8][3]

Semantic evolution

The first sense of the verb, to make plans or counsels come to nothing by making them foolish, was used until the early 18th century.[2][9] From about 1555 it was also used of a person, to make utterly foolish or irrational,[2] and Johnson (1755) defined it as to strike with folly or to deprive of understanding.[11] The narrower sense, to fill someone with a foolish passion beyond the control of reason, is dated 1567 by Barnhart and to the 1620s by Etymonline;[3][4] the OED notes that it now chiefly means an intense, usually romantic and short-lived passion.[2] The adjective is now rare outside Scots, where it meant mad or foolish,[9][12][13] and the noun, an infatuated person, is literary.[13][8] The noun infatuation is recorded from 1649.[3]

Timeline

  • 1471 – adjective, infatuated.[2][3]
  • 1533 – verb, to turn counsels to foolishness, to frustrate (obsolete by 1724).[2][8]
  • c. 1555 – to make a person foolish or irrational.[2]
  • 1567 – to inspire with a foolish passion.[3]
  • 1649 – the noun infatuation.[3]
  • 1712 – to stupefy the senses (obsolete, rare).[2]

Meanings

Verb

  1. To fill someone with a foolish, intense and usually brief passion, especially for another person: The new tutor infatuated half the class.[13][2]
  2. To make someone act foolishly; to deprive of sound judgment.[13][8][2]
  3. (obsolete, 1533–1724) To turn plans or counsels into foolishness; to frustrate.[2][8][9]

Adjective

  1. (archaic) Infatuated.[13][8][9]

Noun

  1. (literary) A person who is infatuated.[13][8]

Word family

  • infatuation
  • infatuator
  • infatuated
  • fatuity
  • fatuous

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  3. ^ a b c d e f g h Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  4. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  5. ^ a b Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  6. ^ a b The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
  7. ^ a b Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  8. ^ a b c d e f g h Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  9. ^ a b c d e Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  10. ^ Weekley, Ernest (1921), An Etymological Dictionary of Modern English, London: John Murray
  11. ^ Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
  12. ^ Wright, Joseph, ed. (1898–1905), The English Dialect Dictionary, 6 vols., Oxford: Henry Frowde; via EDD Online 4.0, University of Innsbruck (CC BY 4.0)
  13. ^ a b c d e f Collins English Dictionary (2023), Glasgow: HarperCollins

Related etymologies

Cite this entry

“Infatuate.” Etymologically, 4 Nov. 2026, etymologically.com/en/infatuate. Accessed 4 Nov. 2026.

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