Etymologically

legitimus

Etymology and origin of the Latin word legitimus

Confidence
Established
Formation
Derivation
First attested
Rhetorica ad Herennium
Ultimate origin
Latin (lēx)

Pronunciation

  • IPA (Classical): [ɫeːˈɡɪ.tɪ.mʊs][1]
  • IPA (Ecclesiastical): [leˈd͡ʒiː.ti.mus][1]

Forms

lēgitimus (feminine lēgitima, neuter lēgitimum, adverb lēgitimē); first/second-declension adjective[1]

Etymology

It is from the stem of lēx “law”, ⟨lēg-⟩, with the suffix ⟨-timus⟩ (also ⟨-tumus⟩), as in fīnitimus and maritimus, from Proto-Indo-European *-(t)m̥mos.[1][2][3] The spelling ⟨lēgitumus⟩ occurs in inscriptions.[3]

Earliest recorded meaning

The OLD's earliest citation is from the Rhetorica ad Herennium, of what concerns the law.[2] Köbler dates it 86/82 BC.[4]

Semantic evolution

It meant of or concerning the law, and legally prescribed, statutory, as Cicero's day appointed by law for elections.[2][5] Of contracts and marriages it meant valid in law, of children born in lawful wedlock, and of actions lawful.[2] Figuratively it meant prescribed by custom, regular, proper, by the rules of art, as in Horace, and in Ovid genuine, real.[2] Summa lēgitima was a fee paid on entering a provincial senate.[2]

In Ecclesiastical Latin it meant legal, legitimate.[6] In Medieval Latin aetās lēgitima meant full age, and the word meant of age, and lawful, trustworthy, as a witness.[7] It became Spanish and Portuguese lindo “pretty”, beside the learned legítimo.[1] English legitimate came in the mid-15th century from Medieval Latin lēgitimātus.[8]

Timeline

  • 86/82 BC – The Rhetorica ad Herennium uses it of the law.[2][4]
  • 116–27 BC – Varro uses it of what is statutory.[2][4]
  • 81–43 BC – Cicero uses it of legitimate children and valid contracts.[2][4]
  • mid-15th century – English legitimate is recorded.[8]

Meanings

Adjective

  1. Of the law, legal.[2]
  2. Prescribed by law, statutory; valid in law; of children, legitimate.[2]
  3. Lawful, permitted.[2]
  4. Regular, proper; by the rules of art.[2]
  5. Genuine, real.[2]
  6. (Medieval Latin) Of full age; trustworthy.[7]

Word family

  • illēgitimus
  • lēgitimō

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 n Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  7. ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
  8. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry

“Legitimus.” Etymologically, 16 Oct. 2026, etymologically.com/la/legitimus. Accessed 16 Oct. 2026.

Last edited on . ·