- Confidence
- Established
- Formation
- Derivation
- First attested
- Twelve Tables
- Ultimate origin
- Proto-Indo-European (*sgʷʰh₂(e)l-n-)
Pronunciation
Forms
falsus (feminine falsa, neuter falsum, superlative falsissimus); first/second-declension participle[1]
Etymology
It is the participle of fallō “to deceive”.[2][1][3] De Vaan derives fallō from Proto-Italic *fal-s-e/o-, Proto-Indo-European *sgʷʰh₂(e)l-n- (“to stumble”), cognate with Ancient Greek σφάλλω (sphállō, “to bring down”) and Sanskrit स्खलते (skhalate, “stumbles”), and thinks the participle may be formed by analogy with salsus.[3]
Earliest recorded meaning
De Vaan records it from the Twelve Tables onwards.[3] Köbler dates the Twelve Tables c. 450 BC.[4]
Semantic evolution
Its main sense was false, untrue, of opinions and reports, as Terence speaks of false rumour, and of persons deceived or mistaken, as in Terence's falsus es “you are wrong”.[2] It also meant sham or spurious, as Cicero's false accuser, counterfeit, as Catullus' false tears, and fictitious or unreal.[2] Of statements it meant lying, of persons treacherous, and of things deceptive, as Plautus uses it repeatedly.[2]
Medieval Latin kept the senses false, incorrect and deceitful.[5][6] Through Old French fals it gave English false, recorded in late Old English.[7] Its descendants also include French faux and Italian falso.[1]
Timeline
- c. 450 BC – The Twelve Tables use it.[3][4]
- c. 250–184 BC – Plautus uses it of lies and deceits.[2][4]
- 190–159 BC – Terence uses it of false rumour.[2][4]
- late Old English – English false is recorded.[7]
Meanings
Adjective
- Untrue, erroneous, false; wrong.[2][1]
- Deceived, mistaken.[2][1]
- Not genuine, sham, spurious; counterfeit.[2]
- Unreal, fictitious, imaginary.[2]
- Lying; deceitful, treacherous.[2]
- Misleading, deceptive.[2]
Noun
- A liar, deceiver.[1]
Related words
References
- ^ a b c d e f g h 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 de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ Mittellateinisches Wörterbuch bis zum ausgehenden 13. Jahrhundert (1967–), Munich: C. H. Beck; Bayerische Akademie der Wissenschaften
- ^ 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
Borrowed into
- English false
Cite this entry
“Falsus.” Etymologically, 15 Oct. 2026, etymologically.com/la/falsus. Accessed 16 Oct. 2026.
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