Etymologically
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pious

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Pronunciation

  • UK: /ˈpaɪəs/[1]

Etymology

It is borrowed from Latin pius (“dutiful, devout, conscientious”), with the ending -ous;[2][3][4][5][6][7] it is recorded about 1450 as piouse.[8] The OED gives it a double source, borrowed from Anglo-Norman piu and pius together with their own source in Latin, with -ous added, perhaps after pieux;[9] the Anglo-Norman adjective is recorded from the early 12th century for "pious, devout" and "merciful, kind".[10] Hoad and Weekley take French pieux as perhaps the immediate source.[11][12] The Latin adjective is cognate with Oscan piíhiúí and Umbrian pihaz (“appeased”),[9][13] and is the base of piō (“to appease, atone for”), the source of expiate.[7][13][14] It is perhaps related to pūrus (“pure”),[9][13][14] through Proto-Indo-European *pu-io- (“purifying”), though the development is disputed.[2]

Earliest recorded meaning

Of an action or thought, showing true reverence and obedience to God; devout: about 1450, in a letter in the Epistolae Academicae Oxon..[9] The OED records it of a person from 1595.[9]

Semantic evolution

The classical Latin sense of dutiful respect towards one's parents, family and others came into English in 1614.[9][2] From the 1620s pious could describe a deception practised for a supposedly good end, the pious fraud (1622),[9][2][5] and since 1683 it has also described hypocritical, self-righteous virtue.[9] A pious hope or wish, from before 1640, is sincere but unlikely to come true.[9] Johnson (1755) gave two senses, careful of the duties owed to God, and careful of the duties of near relation.[15] In British underworld cant of 1832 pious meant very drunk, perhaps ironically aimed at the clergy.[16]

Timeline

  • c. 1450 – of an act or thought, devout, reverent.[9][8]
  • 1595 – of a person, devout, godly.[9]
  • 1614 – dutiful towards parents, family or friends.[9]
  • 1622 – of a fraud, done for a supposedly good purpose.[9]
  • before 1640 – of a hope or wish, sincere but unlikely to be fulfilled.[9]
  • 1683 – hypocritically virtuous, sanctimonious.[9]

Meanings

Adjective

  1. Having or showing deep reverence for God and faithful to religious duties; devout: a pious woman who never missed morning prayers.[17][14][9]
  2. Making a show of being good or religious; sanctimonious or self-righteous.[17][14][9]
  3. Done for the sake of religion or a supposedly good aim: a pious fraud.[9][5]
  4. Of a hope or wish, sincere but unlikely to be realized: a pious hope that the talks would succeed.[9][14]
  5. (archaic) Dutiful and loyal towards one's parents or family.[17][9][15]

Word family

  • piously
  • piousness
  • pseudopious
  • superpious
  • unpious

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
  4. ^ Barnhart, Robert K., ed. (1995), The Barnhart Concise Dictionary of Etymology, New York: HarperCollins
  5. ^ a b c Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  6. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
  7. ^ a b Ayto, John (2005), Word Origins: The Secret Histories of English Words from A to Z, 2nd ed., London: A & C Black
  8. ^ a b Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
  9. ^ a b c d e f g h i j k l m n o p q r s t Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  10. ^ Anglo-Norman Dictionary (AND2), Aberystwyth University, anglo-norman.net (2nd ed., 2005–)
  11. ^ Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
  12. ^ Weekley, Ernest (1921), An Etymological Dictionary of Modern English, London: John Murray
  13. ^ a b c Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
  14. ^ a b c d e Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  15. ^ a b Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
  16. ^ Green, Jonathon (2010), Green's Dictionary of Slang, London: Chambers; digital ed. 2016–, https://greensdictofslang.com
  17. ^ a b c Collins English Dictionary (2023), Glasgow: HarperCollins