Etymologically

Etymology and origin of the Latin word nimirum

Confidence
Established
Formation
Compound
First attested
c. 250–184 BC, Plautus
Ultimate origin
Latin (nī,mīrus)

Pronunciation

  • Classical: [niːˈmiː.rũː][1]
  • Ecclesiastical: [niˈmiː.rum][1]

Forms

nīmīrum (not comparable)[1] It is also written as two words, nī mīrum.[2]

Etymology

It is a fusion of nī (“if not, unless”) and mīrum (“a wonder”), the neuter of mīrus (“wonderful”): literally “unless it is a wonder”.[2][1][3] De Vaan traces ⟨nī⟩ to Proto-Indo-European *nei, ⟨ne⟩ “not” with a deictic particle;[4] ⟨mīrus⟩ goes back to Proto-Indo-European *sméyros (“laughing, smiling”), and is related to English smile.[1][2]

Earliest recorded meaning

Köbler gives Plautus as its first author.[5] Terence has nīmīrum hominēs frīgent, “they are surely given a cold welcome”.[3]

Semantic evolution

It puts forward a statement as beyond doubt: “without doubt, evidently, of course”, often in Cicero.[2][3] It answers questions: Cicero has a speaker asked what that matters reply nīmīrum, “why, the whole case turns on it”.[2] Very often it is ironic, “to be sure, forsooth”: Horace asks whether things will always go well for the rich man alone, and Tacitus mocks a general who shuts himself in, ready, no doubt, to endure a siege.[2][3] Lewis and Short note it is weaker than mīrum nī.[3]

Church Latin glosses it “truly, certainly, undoubtedly”.[6]

Timeline

  • c. 250–184 BC – Plautus.[5]
  • 190–159 BC – Terence in the sense “surely”.[3][5]
  • 81–43 BC – Cicero in answers.[2][5]
  • 65–8 BC – Horace in ironic use.[2][5]

Meanings

Adverb

  1. Without doubt, evidently, of course, surely.[2][1][6]
  2. (in answers) Why, of course.[2]
  3. (ironic) To be sure, forsooth.[2][1][3]

References

  1. ^ a b c d e f g Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e f g Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ 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 Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
Cite this entry

“Nimirum.” Etymologically, 18 Oct. 2026, etymologically.com/la/nimirum. Accessed 19 Oct. 2026.

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