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firme

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Etymology and origin of the Latin word firme

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Proto-Indo-European *dher-mo-
Etymology tree
inherited borrowed derived
Latin firmus
French ferme
Italian fermo
Latin firme
From the same root
Latin firmitas ← firmus
Latin firmitudo ← firmus
Latin firmo ← firmus
Latin infirmus ← firmus

Forms

firmē (comparative firmius, superlative firmissimē)[1][2]

Etymology

It is from Latin firmus (“firm, strong”) + -ē.[1][3] De Vaan derives the adjective from Proto-Italic *fermo- and Proto-Indo-European *dher-mo- (“holding”), with /i/ perhaps from /e/ raised after a labial.[4]

Earliest recorded meaning

Köbler finds it from Plautus on.[3] In the Miles Gloriosus a speaker says ego sum tibi firmē fīdus, “I am steadfastly loyal to you”.[1][2]

Semantic evolution

Its literal sense is firmly or securely, as when Vitruvius wants a base built as solidly as possible.[1][2] More often it is figurative: steadfastly, with conviction, as of believing something firmly in Cicero;[1][2] with verbs of remembering, soundly, in the Rhetorica ad Herennium;[1] and so as to be irrevocable, as of acts confirmed more firmly in one of Cicero's letters.[1] Pliny the Younger pairs it with graviter.[2]

In British medieval Latin it and firmiter mean firmly or fast, soundly, and steadfastly or irrevocably.[5]

Timeline

  • c. 250–184 BC – Plautus uses it of steadfast loyalty.[1][3]
  • c. 84–c. 25 BC – Vitruvius uses it of building firmly.[1][3]
  • 81–43 BC – Cicero uses it of firm belief and of acts made irrevocable.[1][2][3]

Meanings

Adverb

  1. Firmly, securely, fast.[1][5]
  2. Steadfastly, unwaveringly, with conviction.[1][2]
  3. With verbs of remembering: soundly, unfalteringly.[1]
  4. So as to be irrevocable, immutably.[1][5]
  • firmiter

References

  1. ^ a b c d e f g h i j k l m n Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  2. ^ a b c d e f g Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
  3. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  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 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

“Firme.” Etymologically, 21 Oct. 2026, etymologically.com/la/firme. Accessed 22 Oct. 2026.

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