Etymologically

Etymology and origin of the Latin word prolabor

Confidence
Established
Formation
Derivation
First attested
170–c. 90 BC, Accius
Ultimate origin
Latin (lābor)
Etymology tree
inherited borrowed derived
Latin labor
French labeur
Latin prolabor
Latin lapsus
Latin dilabor
Latin relabor
Latin delabor
Latin sublabor

Pronunciation

  • Classical: [proːˈɫaː.bɔr][1]
  • Ecclesiastical: [proˈlaː.bor][1]

Forms

prōlābor (present infinitive prōlābī, perfect active prōlāpsus sum); third conjugation, deponent[1]

Etymology

It is from Latin prō- + lābor (“to glide, slip”).[2][3] De Vaan lists lābor and its compounds under labō “to totter”, but doubts that the two stems belong together;[4] Wiktionary suggests Proto-Indo-European *(s)leh₂b- (“to hang loosely, be weak”).[1]

Earliest recorded meaning

Lewis & Short quote Accius, cited by Cicero, of the sea: a mass that has slid forward rushes down.[5] Cicero's Aratea has one of the Fishes gliding a little ahead.[2]

Semantic evolution

Its first sense is to slide or slip forward;[2] Apuleius has blood that has flowed from a head, and Cicero uses it of running on too long in a speech and of a passion that has gone to an extreme.[2] Things slide out of place: Lucretius has the earth sinking back into its seat.[2] It is to slip from a place, as a statue's crown that fell into its hand by itself in Livy,[2] and to lapse into a condition, as a victor's mind into pity.[2] It is to overbalance, as a rider with his horse in Propertius, and of buildings to give way, as a temple of Jupiter in Nepos.[2] Cicero also has it of falling into error from fear and of the young who have so declined that they must be restrained.[2] Lewis & Short note that in Cicero it is most often figurative.[5] Church Latin glosses it to fall away, lapse, fail.[6]

Timeline

  • 170–c. 90 BC – Accius of a mass sliding forward.[5][7]
  • 81–43 BC – Cicero of a constellation, of a long speech and of decline.[2][7]
  • 96–55 BC – Lucretius of the earth sinking back.[2][7]
  • c. 100–24 BC – Nepos of a collapsing temple.[2][7]
  • 59 BC–17 AD – Livy of a falling crown and a mind lapsing into pity.[2][7]

Meanings

Verb

  1. To glide, slide or slip forward; of liquids, to flow forth; to run on in a speech.[2][5][1]
  2. To slide out of position; to slip from a place, drop.[2]
  3. To lapse into a practice or state; to fall into error.[2][6]
  4. To fall over; of buildings, to give way, collapse.[2][5][1]
  5. To fall into decay, decline, degenerate.[2][1]

Word family

  • prōlāpsiō
  • prolapsus

References

  1. ^ a b c d e f g 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 Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  3. ^ Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ 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 e 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 c d e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
Cite this entry

“Prolabor.” Etymologically, 20 Oct. 2026, etymologically.com/la/prolabor. Accessed 20 Oct. 2026.

Last edited on . ·