Etymologically

Etymology and origin of the Latin word adaeque

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Latin (aequus)
Etymology tree
inherited borrowed derived
Latin aequus
Latin aeque
Latin adaeque
Latin peraeque
Latin aequiter
Latin iniquus
Latin inique
Latin aequalis
English equal
French égal
French également
Latin inaequalis
Latin aequaliter
Latin aequo
Latin coaequo
Latin adaequo
Latin exaequo

Forms

adaequē (not comparable)[1]

Etymology

It is from Latin ad- + aequē (“equally”),[2][3][4] built on the adverb of aequus (“level, equal”), for which de Vaan finds no convincing etymology.[5] Wiktionary suggests instead that it may be a back-formation from adaequō (“to make equal”).[1]

Earliest recorded meaning

Plautus has it first,[5][6] always with a negative such as nēmō, numquam or neque, which gives the clause a comparative sense:[7] numquam ecastor ūllō diē rīsī adaequē “by Castor, I never laughed so much on any day”.[2][8]

Semantic evolution

It is mostly a word of early and late Latin;[7] Lewis and Short note that Cicero never uses it.[7] With Plautus it can take an ablative of comparison and even a comparative adjective,[7][2] and it can be followed by atque or ut “as”.[2][8] A passage of Livy has it in some editions, but Madvig read adaequārī there.[7]

The TLL notes that it is not found in affirmative clauses before Apuleius and the grammarian Juba.[3] Apuleius uses it often, of things equal to others and in the sense “also, likewise”;[2][8] Fronto, Ambrosiaster, Hilary of Poitiers and the Theodosian Code also have it.[2][3][7]

Timeline

  • c. 250–184 BC – Plautus uses it in negative comparisons.[2][7][6]
  • 100–170 AD – Fronto uses it of Trajan's popularity.[2][6]
  • c. 125–175 AD – Apuleius uses it in affirmative clauses and in the sense “also”.[2][3][6]
  • 3rd third of the 4th century AD – Ambrosiaster uses it of appointing a bishop and a deacon alike.[3][6]

Meanings

Adverb

  1. Equally, to the same extent, as, so; with Plautus mostly after a negative.[2][7]
  2. Also, likewise.[2][1]

References

  1. ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d e Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ Bianchi, Rossella; Lelli, Olga (2014), VOLI: Vocabolario di latino, Florence: Le Monnier
  5. ^ 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
  6. ^ a b c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  7. ^ a b c d e f g h Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  8. ^ a b c Conte, Gian Biagio; Pianezzola, Emilio; Ranucci, Giuliano (2010), il Latino: Vocabolario della lingua latina, 3rd ed., Florence: Le Monnier
Cite this entry

“Adaeque.” Etymologically, 20 Oct. 2026, etymologically.com/la/adaeque. Accessed 20 Oct. 2026.

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