Etymologically

indomitabilis

Etymology and origin of the Latin word indomitabilis

Confidence
Probable
Formation
Derivation
First attested
500s Pseudo-Ambrose, De paenitentia More words from the 5th century
Ultimate origin
Latin domō
Etymology tree
inherited borrowed derived
Latin domō
Latin domitō
Latin indomitābilis
English indomitable
From the same root
Latin domitor ← domō
Latin ēdomō ← domō
Latin perdomo ← domō
English daunt ← domitō

Forms

indomitābilis (neuter indomitābile); third-declension two-termination adjective[1]

Etymology

It is formed from Latin in-2 (“not”) + domitō (“to tame”) + -bilis,[2][3] through an unattested *domitābilis, according to Etymonline, which takes domitō as the frequentative of domō (“to tame”).[3] Lewis & Short and Jeanneau relate it instead to indomitus “untamed”.[1][4]

Earliest recorded meaning

Its only ancient record is in chapter 30 of a treatise on penance, which Lewis & Short attribute to Victor of Tunnuna and Gaffiot to Ambrose;[1][5] Köbler lists it under Pseudo-Ambrose and dates it, with a query, to the 6th century AD.[2] There it means “that cannot be subdued”.[1][5]

Semantic evolution

It belonged to Ecclesiastical Latin.[1][6] In the Latin of medieval and early modern Hungary it described what cannot be checked or conquered, as a warlike people.[7] The DMLBS files it under the older indomabilis.[8]

English took it over in the 1630s as indomitable, “that cannot be tamed”; the sense “unyielding, resolute” of people is from about 1830.[3]

Timeline

  • 6th century AD (?) – A treatise on penance ascribed to Ambrose uses it.[2][1]
  • 1630s – English borrows it as indomitable.[3]

Meanings

Adjective

  1. (Ecclesiastical Latin) That cannot be subdued or tamed, indomitable.[1][6][5]
  2. (Medieval Latin) That cannot be conquered or held back.[7]

References

  1. ^ a b c d e f g Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  2. ^ a b c Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  3. ^ a b c d Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  4. ^ Jeanneau, Gérard; Woitrain, Jean-Paul; Hassid, Jean-Claude (2017), Dictionnaire latin-français, online ed., prima-elementa.fr
  5. ^ a b c Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  6. ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  7. ^ a b Bartal, Antal, et al. (1987–), Lexicon Latinitatis Medii Aevi Hungariae, Budapest: Akadémiai Kiadó; online ed. ELTE
  8. ^ Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press

Borrowed into

Cite this entry

“Indomitabilis.” Etymologically, 7 Nov. 2026, etymologically.com/la/indomitabilis. Accessed 8 Nov. 2026.

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