Etymologically

blasphemo

Etymology and origin of the Latin word blasphemo

Confidence
Established
Formation
Borrowing
First attested
c. 160–220 AD, Tertullian
Borrowed from
Ancient Greek βλασφημέω
Ultimate origin
Ancient Greek βλασφημέω

Pronunciation

  • Classical: [bɫasˈpʰeː.moː][1]
  • Ecclesiastical: [blasˈfɛː.mo][1]

Forms

blasphēmō (present infinitive blasphēmāre, perfect active blasphēmāvī, supine blasphēmātum); first conjugation[1]

Etymology

It is borrowed from Ancient Greek βλασφημέω (blasphēméō, “to speak ill of, slander”),[1][2][3][4] a verb that Etymonline derives from βλάσφημος (blásphēmos, “evil-speaking”).[5]

Spoken Latin wore it down: the TLL lists Old Italian biastimare, French blâmer and Spanish lastimar among its outcomes.[3] Etymonline traces English blame through Old French blasmer and a Vulgar Latin *blastemō to this verb, and blaspheme through Old French blasfemer.[5]

Earliest recorded meaning

It belongs to the Bible and to Church writers who quote it.[3][6] Tertullian has blasphēmāre nōmen Dominī, to blaspheme the name of the Lord,[2][7] and in the Vulgate Leviticus tells of a man cum blasphēmāsset nōmen Deī, “when he had blasphemed the name of God”.[3][8]

Semantic evolution

Its main sense was to speak impiously of God and sacred things,[2][5] but it also meant to revile or reproach a person, as in the Vulgate's First Chronicles,[2][5] and Christian writers used it of teaching heresy.[4] Medieval writers extended it to cursing, to treating someone badly and to calling something harmful.[4]

The reproach sense lived on in French blâmer and English blame, recorded from about 1200;[5] English took blaspheme itself from Old French in the mid-14th century.[5]

Timeline

  • c. 160–220 AD – Tertullian uses it of blaspheming the name of the Lord.[2][7][9]
  • 390–406 AD – The Vulgate uses it of God's name and of reviling.[2][3][9]
  • c. 1200 – English blame “find fault with” is borrowed from Old French blasmer.[5]
  • mid-14th century – English blaspheme is borrowed from Old French blasfemer.[5]

Meanings

Verb

  1. (Ecclesiastical Latin) To blaspheme, to speak impiously of God or sacred things.[2][10][6]
  2. (Late Latin) To revile, reproach, slander.[2][1][4]
  3. (Medieval Latin) To curse; to treat badly; to call harmful.[4]

Word family

  • blasphēmābilis
  • blasphēmātiō
  • English blaspheme
  • English blame

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  3. ^ a b c d e Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c d e Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  5. ^ a b c d e f g h Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  6. ^ a b Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  7. ^ a b Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  8. ^ Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  9. ^ a b Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  10. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson

Related etymologies

Cite this entry

“Blasphemo.” Etymologically, 23 Oct. 2026, etymologically.com/la/blasphemo. Accessed 23 Oct. 2026.

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