Etymologically

pleo

Etymology and origin of the Latin word pleo

Confidence
Established
Formation
Inherited
First attested
Festus
Inherited from
Proto-Italic *plē-
Ultimate origin
Proto-Indo-European (*pleh₁-)
Etymology tree
inherited borrowed derived
Latin pleo
Latin compleo

Forms

pleō (present infinitive plēre, perfect active plēvī, supine plētum); second conjugation[1]

Etymology

It is inherited from Proto-Italic *plē- (“to fill”), inherited from Proto-Indo-European *pleh₁- (“to fill”), originally an aorist stem.[2][3] Cognate with Sanskrit पिपर्ति (píparti, “fills”) and Ancient Greek πίμπλημι (pímplēmi, “I fill”).[4]

Earliest recorded meaning

The simple verb is cited only by grammarians: Festus reports that the ancients said plentur “they are filled” without a prefix.[5]

Semantic evolution

It meant to fill, fill up.[4] It is the root of plēnus “full” and of its compounds compleō, expleō, impleō and suppleō, which are the forms in actual use.[5]

Through these compounds it lies behind English complete, English implement, English supply and English replete.[6]

Timeline

  • late 14th century – English complete is recorded.[6]

Meanings

Verb

  1. To fill, fill up.[4]

Word family

Usage notes

British Medieval Latin has an unrelated pleō, a peg or thatching-pin, from Old French ploion.[7]

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
  3. ^ Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
  4. ^ a b c Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
  5. ^ a b Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
  6. ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  7. ^ Latham, R. E., D. R. Howlett, R. K. Ashdowne, et al. (1975–2013), Dictionary of Medieval Latin from British Sources, London: British Academy / Oxford University Press

Derived terms

Related etymologies

  • tollo · also from Proto-Indo-European
  • vado · also from Proto-Indo-European
  • plango · also from Proto-Indo-European
  • fleo · also from Proto-Indo-European
  • torpeo · also from Proto-Indo-European
  • horreo · also from Proto-Indo-European
  • fas · also from Proto-Indo-European
  • solium · also from Proto-Indo-European
Cite this entry

“Pleo.” Etymologically, 16 Oct. 2026, etymologically.com/la/pleo. Accessed 16 Oct. 2026.

Last edited on . ·