Etymologically

Etymology and origin of the Latin word immensus

Confidence
Established
Formation
Derivation
First attested
96–55 BC, Lucretius
Ultimate origin
Proto-Indo-European (*meh₁-ti-)
Etymology tree
inherited borrowed derived
Latin immensus
French immense

Pronunciation

  • Classical: [ɪmˈmẽː.sʊs][1]
  • Ecclesiastical: [imˈmɛn.sus][1]

Forms

immēnsus (feminine immēnsa, neuter immēnsum); first/second-declension adjective[1] It is also spelled inmēnsus.[2][3]

Etymology

It is from Latin in- (“not”) + mēnsus (“measured”), the negated past participle of mētior (“to measure”).[2][1][4] De Vaan lists it among the derivatives of mētior, a verb made from a noun Proto-Italic *mēti-, Proto-Indo-European *meh₁-ti- (“measurement”).[5] Servius' commentator explains it as what cannot be taken in by measure.[4]

Earliest recorded meaning

De Vaan dates it from Lucretius,[5] who asks whether the universe immēnsum pateat vāstēque profundum, “lies open, immeasurable and vast in depth”.[2] Köbler gives Cato.[6]

Semantic evolution

Immēnsus is “immeasurable, boundless” (Virgil's immēnsum mare), and with some exaggeration “huge, vast”, which the OLD says is the main idea in most examples.[2] It is used of endless time (Cicero: tempore immēnsō), of great weight, value or number, of abstract things “immense, infinite” (cupiditātēs immēnsae, Cicero), and of noise.[2][3] The neuter immēnsum is “an immense space” and, as an adverb, “immensely”, Pliny the Elder has immēnsum quantum, “to an enormous degree”.[2][3]

Church Latin glosses it “immense, infinite, all-pervading”.[7]

Timeline

  • 96–55 BC – Lucretius: immēnsum pateat vāstēque profundum.[2][5][6]
  • 81–43 BC – Cicero of endless time.[2][6]
  • 70–19 BC – Virgil of the boundless sea.[2][6]

Meanings

Adjective

  1. Immeasurable, boundless, endless.[2][3][1]
  2. Huge, vast.[2][3]
  3. Endless (in time); innumerable.[2]
  4. Immense, infinitely great.[2][7]

Word family

  • immēnsitās
  • immensum

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  5. ^ 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
  6. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  7. ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson

Borrowed into

Cite this entry

“Immensus.” Etymologically, 18 Oct. 2026, etymologically.com/la/immensus. Accessed 19 Oct. 2026.

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