Etymologically

Etymology and origin of the Latin word subruo

Confidence
Established
Formation
Derivation
First attested
96–55 BC, Lucretius
Ultimate origin
Latin (ruō)
Etymology tree
inherited borrowed derived
Latin ruo
Latin subruo
Latin proruo
Latin diruo
Latin corruo
Latin obruo

Pronunciation

  • Classical: [ˈsʊb.ru.oː][1]
  • Ecclesiastical: [ˈsub.ru.o][1]

Forms

subruō (present infinitive subruere, perfect active subruī, supine subrutum); third conjugation[1] It is also spelled surruō.[1]

Etymology

It is from Latin sub- (“under”) + ruō (“to fall, cast down”).[2][1] De Vaan separates ruō (“to rush, fall”), from Proto-Indo-European *h₃reu-e/o- (“to run, hurry”), from ruō (“to dig”), from Proto-Indo-European *(H)reuH-e/o-, and notes that their derivatives became mixed up in Latin.[3]

Earliest recorded meaning

The OLD's earliest examples are in Lucretius, of age hollowing out great caves underground, and Caesar, of attackers setting fire to the gates and undermining the wall.[2]

Semantic evolution

It is to weaken something by digging under it, to undermine, as of besiegers and of natural forces;[2] Vitruvius uses it of sand washed out by waves.[2] Horace uses it figuratively, of a man who undermined rival kings with gifts.[2] Church Latin glosses it to destroy or overthrow.[4]

Timeline

  • 96–55 BC – Lucretius of caves hollowed out by age.[2][5]
  • c. 50 BC – Caesar of undermining a town wall.[2][5]
  • 65–8 BC – Horace of undermining rivals with bribes.[2][5]

Meanings

Verb

  1. To undermine, weaken at the base by digging; to dislodge from beneath.[2]
  2. Figuratively, to destroy insidiously, subvert; to overthrow.[2][4]

Word family

  • subrutor

References

  1. ^ a b c d e Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ 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 Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
  5. ^ a b c Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
Cite this entry

“Subruo.” Etymologically, 19 Oct. 2026, etymologically.com/la/subruo. Accessed 20 Oct. 2026.

Last edited on . ·