Etymologically

Etymology and origin of the Latin word subsido

Confidence
Established
Formation
Derivation
First attested
c. 250–184 BC, Plautus
Ultimate origin
Latin (sīdō)

Pronunciation

  • Classical: [sʊpˈsiː.doː][1]
  • Ecclesiastical: [subˈsiː.do][1]

Forms

subsīdō (present infinitive subsīdere, perfect active subsēdī, supine subsessum); third conjugation[1] Vitruvius has the perfect subsīdī.[2]

Etymology

It is from Latin sub- + sīdō (“to sit down, settle”).[2][1] De Vaan derives ⟨sīdō⟩ from Proto-Italic *sizd-e/o- and Proto-Indo-European *si-sd-e/o- (“to sit down”), cognate with Umbrian sistu (“let him sit down”), Sanskrit सीदति (sī́dati, “sits down”) and Ancient Greek ἵζω (hízō, “to sit down”); the compounds are attested earlier than the simple verb.[3]

Earliest recorded meaning

De Vaan dates it from Plautus,[3][4] in a fragment quoted by Varro: “squat down, all of you, the way the triarii do”.[2][5]

Semantic evolution

It is first to squat, crouch or kneel, and also to cower;[2] Lucretius uses it of female animals in mating.[2] Cicero has it of lying in wait, as Milo would have had to do if he were the plotter, and Virgil makes it transitive: the adulterer lay in wait for the conqueror of Asia.[2] Varro uses it of settling in a place after wandering, of those who came to Rome and settled on the Saturnian hill.[2] Of things it is to sink to the bottom and to subside: waves subside in Virgil, winds abate in Propertius, and in Seneca desire dies down.[2] Pliny the Elder uses it of wealth coming to rest in certain hands.[2]

Church Latin glosses it “sit, sink, settle down, crouch”.[6] English subside (1680s) is from it, first of objects sinking to the bottom.[7]

Timeline

  • c. 250–184 BC – Plautus of soldiers squatting down.[2][4]
  • 116–27 BC – Varro of settling in a place.[2][4]
  • 81–43 BC – Cicero of lying in wait.[2][4]
  • 70–19 BC – Virgil of waves subsiding.[2][4]
  • 4 BC–65 AD – Seneca of a passion abating.[2][4]
  • 1680s – English subside.[7]

Meanings

Verb

  1. To squat or crouch down;[2][5][1] in genua subsīdere, to kneel; to cower.[2][5][1]
  2. To lie in wait, lie in ambush;[2][1] (transitive) to lie in wait for.[2][1]
  3. To settle down in a place, stay put; of wealth, to come to rest with someone.[2]
  4. To sink to the bottom, settle; to sink below a surface.[2][1][6]
  5. To sink to a lower level, subside, give way; to slope downwards.[2][1]
  6. Of winds, fire and feelings, to abate, die down.[2]

Word family

  • sīdō
  • English subside

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 n o p q r s t u v 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
  4. ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
  5. ^ a b c Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ a b Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  7. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Cite this entry

“Subsido.” Etymologically, 19 Oct. 2026, etymologically.com/la/subsido. Accessed 20 Oct. 2026.

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