Etymologically
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imbecillus

Etymology and origin of the Latin word imbecillus

History

Pronunciation

  • IPA (Classical): [ɪm.beːˈkɪl.lʊs][1]
  • IPA (Ecclesiastical): [im.beˈt͡ʃil.lus][1]

Forms

imbēcillus (feminine imbēcilla, neuter imbēcillum, comparative imbēcillior); first/second-declension adjective[1]

Etymology

It is without an accepted etymology.[2][3] A scholiast on Juvenal explained it as “without a staff”, and it has been derived from a negative prefix and baculum, as by Köbler and Georges.[2][4][5][6] De Vaan rejects this, since those who can walk without a stick are the stronger ones, and because the ē is long in Lucretius and Horace; he also finds Ernout and Meillet's starting point *imbeccillus far-fetched.[2][7]

Earliest recorded meaning

It is first found in Afranius, in the 2nd century BC,[2][4] who calls a boy “puny and weak in strength”.[3]

Semantic evolution

Its first sense was physically weak, of people and animals, and weak through illness, as of an ailing friend in Cicero.[3][8] It extended to delicate plants, fragile substances, weak forces, and food or medicine without potency, as in Cicero's remark that the remedy is somehow weaker than the disease.[3][9] Applied to power and resources it meant ineffective, as of weak troops or prosecutors, and of the mind it meant feeble or lacking moral strength.[3]

A third-declension form imbecillis also occurs.[3][8] Through French imbécile it gave English imbecile, first meaning “weak, feeble” in body.[7]

Timeline

  • 2nd century BC – Afranius uses it of a weak boy.[3][4]
  • 96–55 BC – Lucretius uses it of fragile first bodies.[3][4]
  • 81–43 BC – Cicero uses it of weak old men and weak troops.[3][8][4]
  • 86–34 BC – Sallust uses it of youth corrupted by ambition.[3][4]
  • 1540s – Through French it gives English imbecile.[7]

Meanings

Adjective

  1. Physically weak, feeble; sickly.[3][8]
  2. (of plants) Delicate.[3]
  3. Fragile, (of forces) weak, (of food, medicine) ineffective.[3]
  4. Lacking power or resources, ineffective.[3]
  5. Lacking intellectual or moral strength.[3]

Word family

  • imbēcillitās
  • perimbēcillus

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  3. ^ a b c d e f g h i j k l m n o Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  4. ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
  6. ^ Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  7. ^ a b c Harper, Douglas, Online Etymology Dictionary, https://www.etymonline.com
  8. ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  9. ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
Cite this entry

“Imbecillus.” Etymologically, 10 Oct. 2026, etymologically.com/la/imbecillus. Accessed 10 Oct. 2026.

Last edited on .