Etymology and origin of the Latin word impurus
- Confidence
- Established
- Formation
- Derivation
- First attested
- c. 250–184 BC Plautus
- Ultimate origin
- Latin pūrus
Etymology tree
Derivations
From the same root
Forms
impūrus (feminine impūra, neuter impūrum, comparative impūrior, superlative impūrissimus, adverb impūrē); first/second-declension adjective[1]
Etymology
It is from Latin in-2 (“not”) + pūrus (“pure, clean”).[2][3][1]
Earliest recorded meaning
It is found from Plautus on, as a term of abuse: in the Bacchides a character addresses another as “you vile man”.[2][3][4]
Semantic evolution
In Plautus and Terence the word, often in the superlative, was a general insult,[2][3] and in Classical Latin it meant morally foul, especially in sexual conduct.[2][5] The literal sense of dirty or muddy is rare: Propertius has it of muddy places and Ovid of an unclean mother's womb.[2][5]
In Medieval Latin it meant unclean in the literal and in the religious sense, profane or desecrated, and shameful;[6] British writers also used it of adulterated substances in medicine and alchemy.[7] Through Old French it gave English impure, first of muddy wine.[8]
Timeline
- c. 250–184 BC – Plautus uses it as a term of abuse.[2][4]
- 190–159 BC – Terence uses the superlative.[3][4]
- 57/46–12 BC – Propertius uses it of muddy places.[2][4]
- 43 BC–18 AD – Ovid uses it of an unclean womb.[5][4]
- c. 120 AD – Florus uses it of poisons used against divine law.[2][4]
- mid-15th century – English borrows it as impure, of muddy wine.[8]
Meanings
Adjective
- Dirty, muddy, unclean.[2][5]
- Morally foul, impure, especially in sexual conduct.[2][5]
- As a term of abuse: vile, infamous, abominable.[2]
- (Medieval Latin) Unclean in the religious sense; profane.[6][9]
- (Medieval Latin) Adulterated, of a substance.[7]
Word family
- impūritās
- impūritia
- impūrātus
- impūrē
Usage notes
It is also spelled inpurus.[2][5] Lewis & Short compare its near-synonyms obscēnus, spurcus and immundus.[5]
References
- ^ a b c d Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h i j k l Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b c d Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
- ^ a b c d e f Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b c d e f g Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ a b Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
- ^ a b 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
- ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
- ^ Stelten, Leo F. (1995), Dictionary of Ecclesiastical Latin, Peabody, Mass.: Hendrickson
Borrowed into
- English impure
Cite this entry
“Impurus.” Etymologically, 7 Nov. 2026, etymologically.com/la/impurus. Accessed 7 Nov. 2026.
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