Etymologically

affirmativus

Etymology and origin of the Latin word affirmativus

Confidence
Established
Formation
Derivation
First attested
350–400 Diomedes
Ultimate origin
Latin affirmō
Etymology tree
inherited borrowed derived
Latin fīrmus
French ferme
Italian fermo
Latin firmō
French fermer
Italian fermare
Spanish firmar
Italian firmare
Latin affirmō
Spanish afirmar
Latin affirmātīvus
English affirmative
From the same root
Latin firmē ← fīrmus
Latin firmitās ← fīrmus
Latin firmiter ← fīrmus
Latin firmitūdō ← fīrmus
Latin īnfirmus ← fīrmus
English firm ← firmō
Italian firma ← firmō
Latin cōnfirmō ← firmō
Latin firmāmentum ← firmō
Latin offirmō ← firmō
Spanish firma ← firmō
French enfermer ← fermer
French refermer ← fermer
Italian fermata ← fermare
English affirm ← affirmō
Latin affirmātiō ← affirmō

Pronunciation

  • Classical: [af.fɪr.maːˈtiː.wʊs][1]
  • Ecclesiastical: [af.fir.maˈtiː.vus][1]

Forms

affirmātīvus (feminine affirmātīva, neuter affirmātīvum); first/second-declension adjective[1]

Etymology

It is formed from Latin affirmō (“to affirm”) + -īvus.[1][2]

Earliest recorded meaning

It is a grammarians' word: Diomedes, in the second half of the 4th century AD, speaks of an affirmative kind of verb.[3][4]

Semantic evolution

Medieval writers used it of what confirms or permits, and above all in logic and music theory for what affirms, as opposed to negative.[5] As a feminine noun it named an affirmative proposition: an English logic text of before 1250 divides statements into affirmativa and negativa.[6]

Eriugena calls the part of theology that predicates everything of the divine essence affirmativa.[6] English affirmative came through Old French in the mid-15th century, from its use in logic.[2]

Timeline

  • 2nd half of 4th century AD – Diomedes the grammarian has it.[3][4]
  • before 1250 – William of Sherwood divides statements into affirmative and negative.[6]
  • mid-15th century – English borrows affirmative through Old French.[2]

Meanings

Adjective

  1. (grammar) Affirming, affirmative.[3][7]
  2. (Medieval Latin) Confirming; permitting.[5]
  3. (Medieval Latin, logic and music) Affirmative, positive, as opposed to negative.[5][6]

Noun

  1. affirmātīva (Medieval Latin, logic) An affirmative proposition.[6][5]

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  3. ^ a b c Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ a b Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b c d Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
  6. ^ a b c d e 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
  7. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson

Borrowed into

Cite this entry

“Affirmativus.” Etymologically, 7 Nov. 2026, etymologically.com/la/affirmativus. Accessed 7 Nov. 2026.

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