Etymologically

ineo

Etymology and origin of the Latin word ineo

Confidence
Established
Formation
Derivation
First attested
Ennius
Ultimate origin
Latin (eō)
Etymology tree
inherited borrowed derived
Latin ineo
Latin initium
Latin initialis
English initial

Pronunciation

  • IPA (Classical): [ˈɪ.ne.oː][1]
  • IPA (Ecclesiastical): [ˈiː.ne.o][1]

Forms

ineō (present infinitive inīre, perfect active iniī or inīvī, supine initum); irregular conjugation[1]

Etymology

It is from in- (“in, into”) and eō “to go”, inherited from Proto-Italic *eneō.[2][1]

Earliest recorded meaning

The OLD's first citation is Ennius, of beginning an undertaking.[2] Köbler dates Ennius 204–169 BC.[3]

Semantic evolution

It meant to go into, enter a place, as Livy's in urbem inīre, and to enter and take part in a social occasion or joint activity.[2][4] Of animals it meant to cover, mount, as in Varro.[2] It meant to enter on an office, to take on a duty or a danger, to enter into an agreement, with grātiam inīre “to win favour”, as in Plautus, and to begin an undertaking, with cōnsilium inīre “to form a plan”.[2] Ratiōnem inīre meant to make a calculation, as in Terence.[2] Of time it meant to begin, as Cicero's ineunte vēre “at the beginning of spring”.[2][4] Döderlein says inīre is almost always figurative, engaging in something, while intrō and ingredior are literal entering.[5]

In Ecclesiastical Latin it meant to enter, undertake, begin, with foedus inīre “to form a pact”.[6] Its noun initium “beginning” lies behind English initial, through initiālis, recorded in the 1520s.[7]

Timeline

  • 204–169 BC – Ennius uses it of beginning.[2][3]
  • c. 250–184 BC – Plautus uses grātiam inīre.[2][3]
  • 190–159 BC – Terence uses ratiōnem inīre.[2][3]
  • 81–43 BC – Cicero uses ineunte vēre.[4][3]

Meanings

Verb

  1. To go into, enter.[2]
  2. To take part in.[2]
  3. (of animals) To cover, mount.[2]
  4. To enter on (office); to undertake.[2]
  5. To enter into (an agreement), grātiam inīre, to win favour.[2]
  6. To begin, cōnsilium inīre, to form a plan.[2]
  7. ratiōnem inīre, to calculate.[2]
  8. (of time) To begin.[2]

Word family

References

  1. ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p q r Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  4. ^ a b c Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
  5. ^ Döderlein, Ludwig (1874), Döderlein’s Hand-book of Latin Synonymes, tr. H. H. Arnold, Andover: W. F. Draper
  6. ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  7. ^ Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com

Derived terms

Cite this entry

“Ineo.” Etymologically, 16 Oct. 2026, etymologically.com/la/ineo. Accessed 16 Oct. 2026.

Last edited on . ·