- Confidence
- Established
- Formation
- Inherited
- First attested
- Festus
- Inherited from
- Proto-Italic *plē-
- Ultimate origin
- Proto-Indo-European (*pleh₁-)
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
Word family
Related words
Usage notes
British Medieval Latin has an unrelated pleō, a peg or thatching-pin, from Old French ploion.[7]
References
- ^ Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
- ^ a b c Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
- ^ 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
Cite this entry
“Pleo.” Etymologically, 16 Oct. 2026, etymologically.com/la/pleo. Accessed 16 Oct. 2026.
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