Etymologically

insensibilis

Etymology and origin of the Latin word insensibilis

Confidence
Established
Formation
Derivation
First attested
c. 165 AD, Gellius
Ultimate origin
Latin in-,sentiō

Pronunciation

  • Classical: [ĩː.sẽːˈsɪ.bɪ.lɪs][1]
  • Ecclesiastical: [in.senˈsiː.bi.lis][1]

Forms

īnsēnsibilis (neuter īnsēnsibile); third-declension two-termination adjective[1]

Etymology

It is from Latin in- (“not”) + sēnsibilis (“perceptible”).[2][1][3] That adjective comes from sentiō (“to perceive, feel”).[3]

Earliest recorded meaning

It is first found in Gellius,[3] in the sense “incomprehensible”: something is said to be beyond telling and almost insensibile.[2][4][5]

Semantic evolution

Lewis & Short call it post-classical.[4] Serenus Sammonicus uses it passively, of a disease that cannot be felt,[4][6] and pseudo-Apuleius' Asclepius of things imperceptible to the senses.[4][5] Lactantius uses it actively, of what cannot feel: images and the elements are senseless,[6][5] and the neuter plural insensibilia are things without sensation.[4][6]

In Medieval Latin it is “imperceptible” and also “impassive, stupid”;[7] British sources use it of what the senses cannot perceive, of a quantity too small to be noticed, and of what cannot feel.[8]

Timeline

  • c. 165 AD – Gellius uses it for “incomprehensible”.[2][3]
  • c. 250–317 AD – Lactantius uses it of things that cannot feel.[4][6][3]

Meanings

Adjective

  1. Incomprehensible, unintelligible.[2][5]
  2. That cannot be perceived by the senses, imperceptible.[4][6]
  3. That cannot feel, insensible, senseless.[4][6]
  4. (Medieval Latin) Impassive, stupid.[7]

Word family

  • insensibilitas

Usage notes

The adverb īnsēnsibiliter “imperceptibly” is in Cassiodorus.[4]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  4. ^ a b c d e f g h i Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  5. ^ a b c d Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  6. ^ a b c d e f Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  7. ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  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
Cite this entry

“Insensibilis.” Etymologically, 21 Oct. 2026, etymologically.com/la/insensibilis. Accessed 23 Oct. 2026.

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