Etymologically

Etymology and origin of the Latin word suadeo

Confidence
Established
Formation
Inherited
First attested
c. 250–184 BC, Plautus
Inherited from
Proto-Italic *swādeje-
Ultimate origin
Proto-Indo-European (*sweh₂d-)
Etymology tree
inherited borrowed derived
Latin suadeo
Latin persuadeo

Pronunciation

  • Classical: [ˈsʷaː.de.oː], [suˈaː.de.oː][1]
  • Ecclesiastical: [ˈsʷaː.de.o], [suˈaː.de.o][1]

Forms

suādeō (present infinitive suādēre, perfect active suāsī, supine suāsum); second conjugation[1] Lucretius scans sŭādent as three syllables.[2][3]

Etymology

It is inherited from Proto-Italic *swādeje- (“to render agreeable”), inherited from Proto-Indo-European *su(o)h₂d-eie- (“to make tasty”), a causative of the root of suāvis (“sweet, pleasant”); that causative would regularly have given ⟨*sōdē-⟩, so the root form of the adjective was probably brought into the verb.[4][1] The sense “to recommend” comes from “to make sweet, make agreeable”.[4][1] Cognate with Ancient Greek ἁνδάνω (handánō, “to please”), Ancient Greek ἡδύς (hēdús, “sweet”), Sanskrit स्वदति (svádati) and Old English swēte (“sweet”).[2][4]

Earliest recorded meaning

Plautus has modo quod suāsit, id dissuādet, “what he urged just now, he now advises against”, and makes a couch malitiam … suādeat, “suggest mischief”.[2][5]

Semantic evolution

Suādēre is “to recommend, urge, advise” a course of action, with a dative of the person, ut, nē or an infinitive.[2][3][1] In public life it is “to speak in favour of” a law or proposal (Cicero: Catō lēgem suādēns, “Cato, speaking for the law”).[2][1] Things can be its subject, “to suggest, prompt”, and with an accusative and infinitive it is “to try to persuade that”.[2][3]

Church Latin glosses it “to persuade, exhort, advise, urge, suggest, recommend, propose”.[6]

Timeline

  • c. 250–184 BC – Plautus: modo quod suāsit, id dissuādet.[2][5]
  • 96–55 BC – Lucretius scans it as three syllables.[2][5]
  • 81–43 BC – Cicero: Catō lēgem suādēns.[2][5]

Meanings

Verb

  1. To recommend, advise, urge.[2][3][1][6]
  2. To speak in favour of, advocate (a law or proposal).[2][1]
  3. To suggest, prompt (of things).[2]
  4. To try to persuade (that).[2][1][6]

Word family

  • cōnsuādeō
  • dissuādeō
  • persuādeō
  • suādēla
  • suādibilis
  • suādus
  • suāsiō
  • suāsor
  • suāsum
  • suāsus
  • benesuādus
  • suādenter

References

  1. ^ a b c d e f g h i j Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ a b c d Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  4. ^ a b c de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  5. ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  6. ^ a b c Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson

Derived terms

Related etymologies

  • quis · also from Proto-Indo-European
  • cum · also from Proto-Indo-European
  • ego · also from Proto-Indo-European
  • is · also from Proto-Indo-European
  • hic · also from Proto-Indo-European
  • in · also from Proto-Indo-European
  • qui · also from Proto-Indo-European
  • et · also from Proto-Indo-European
Cite this entry

“Suadeo.” Etymologically, 18 Oct. 2026, etymologically.com/la/suadeo. Accessed 19 Oct. 2026.

Last edited on . ·