Etymologically

Etymology and origin of the Latin word ad-

Confidence
Established
Formation
Inherited
Inherited from
Proto-Italic *ad-
Ultimate origin
Proto-Indo-European *h₂ed

Forms

ad- [1] Assimilated forms are common before ⟨c⟩, ⟨f⟩, ⟨g⟩, ⟨l⟩, ⟨n⟩, ⟨p⟩, ⟨s⟩, ⟨t⟩ (acc-, aff-, agg-, all-, ann-, app-, ass-, att-); the ⟨d⟩ is often dropped before ⟨sc⟩, ⟨sp⟩, ⟨st⟩ and ⟨gn⟩ (asc-, asp-, ast-, agn-), and early Latin has ar- (arvorsum, arfuisse).[2][1]

Etymology

It is inherited from Proto-Italic *ad-, the preposition ad used as a prefix; the prefix is found in the other Italic languages too.[1][2] De Vaan traces the preposition to Proto-Indo-European *h₂ed (“to”).[3]

Cognate with Oscan ad-, Umbrian ař-, Old Irish ad-, Welsh add- and Old English æt.[3]

Meanings

Prefix

  1. to, towards, at: addūcō, adveniō, accurrō.[1][2]
  2. (with verbs) Intensifying the action of the simple verb.[1]

Word family

Usage notes

⟨adq-⟩ is often written ⟨acq-⟩, and manuscripts show ⟨amm-⟩ for ⟨adm-⟩.[2]

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill

Derived terms

Descendants

Related etymologies

  • -ce · also from Proto-Italic
  • -que · also from Proto-Italic
  • ob- · also from Proto-Italic
  • per- · also from Proto-Italic
  • pro- · also from Proto-Italic
  • prae- · also from Proto-Italic
  • trans- · also from Proto-Italic
  • bi- · also from Proto-Italic
Cite this entry

“Ad-.” Etymologically, 23 Oct. 2026, etymologically.com/la/ad-. Accessed 23 Oct. 2026.

Last edited on . ·