Etymologically

Etymology and origin of the Latin word deflagro

Confidence
Established
Formation
Derivation
First attested
204–169 BC, Ennius
Ultimate origin
Latin flagrō
Etymology tree
inherited borrowed derived
Latin flagro
Latin deflagro
From the same root
Latin conflagro ← flagro

Pronunciation

  • Classical: [ˈdeː.fɫa.ɡroː][1]
  • Ecclesiastical: [ˈdɛː.fla.ɡro][1]

Forms

dēflagrō (present infinitive dēflagrāre, perfect active dēflagrāvī, supine dēflagrātum); first conjugation[1] Apuleius has the form dēfragl-.[2]

Etymology

It is from Latin dē- + flagrō (“to burn, blaze”).[2][3][1] De Vaan takes the simple verb to be made from an adjective ⟨*flagro-⟩ “burning”, which he traces to Proto-Italic *flagro- and Proto-Indo-European *bʰlg-ro- (“burning”).[4]

Earliest recorded meaning

De Vaan and the OLD record it first in Ennius,[4][2] transitively: shrines “burnt down by the flame” (fana flamma dēflagrāta).[2][3]

Semantic evolution

It means “to burn down”, both of fire destroying something and, intransitively, of a building being consumed;[2][5] the intransitive use is frequent only in Cicero,[5] who reports that the temple of Diana at Ephesus burned down on the night Alexander was born (eadem Dianae Ephesiae templum dēflagrāvisse).[5] Vitruvius uses it of the sun parching the regions it passes close to.[2]

Figuratively it is said of feelings that die down or burn out: Livy has angers “burning out”, and Lucan says of threatening men that they lose their ardour.[2] Ecclesiastical and medieval Latin kept the senses “burn down” and “be consumed by fire”.[6][7]

Timeline

  • 204–169 BC – Ennius writes of shrines burnt by flame.[2][4][8]
  • 81–43 BC – Cicero uses it of temples and houses burning down.[2][5][8]
  • c. 84–c. 25 BC – Vitruvius uses it of the sun scorching land.[2][8]
  • 59 BC–17 AD – Livy uses it of anger dying down.[2][8]
  • 39–65 AD – Lucan uses it of men losing their ardour.[2][8]

Meanings

Verb

  1. (transitive) To destroy by fire, burn down; of the sun, to parch.[2][5]
  2. (intransitive) To be burnt down, be consumed by fire.[2][5][6]
  3. (figurative) Of feelings, to die down, abate; of people, to lose ardour.[2]

Word family

  • dēflagrātiō

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  5. ^ a b c d e f Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  7. ^ Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  8. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
Cite this entry

“Deflagro.” Etymologically, 20 Oct. 2026, etymologically.com/la/deflagro. Accessed 23 Oct. 2026.

Last edited on . ·