- Confidence
- Established
- Formation
- Derivation
- First attested
- Cicero
- Ultimate origin
- Proto-Indo-European (*ḱred-dʰeh₁-)
Etymology tree
Pronunciation
Forms
crēdulus (feminine crēdula, neuter crēdulum); first/second-declension adjective[1]
Etymology
It is from Latin crēdō (“to believe, trust”) + -ulus.[2][1][3] Crēdō is *krezde/o-, from Proto-Indo-European *ḱred-dʰeh₁- (“to place in the heart”), “to believe”.[4]
Earliest recorded meaning
Köbler's first source is Cicero (81–43 BC).[5] Cicero says the most foolish character in comedy is the improvident and credulous old man.[6]
Semantic evolution
It meant, of persons, prone to believe or trust, credulous.[2] Cicero speaks of a foolish and credulous listener and says he willingly shows himself credulous.[7] With a dative it meant trusting someone, as in Virgil and Horace, and Ovid uses it of a fish and Horace of cattle.[7][8] Seneca calls ships credulae, venturesome.[8]
In medieval Latin it meant believing, devout, and trusted, and as a noun a faithful follower.[9][5] English credulous was borrowed in the 1570s.[10]
Timeline
- 81–43 BC – Cicero uses it of credulous old men in comedy.[6][5]
- 70–19 BC – Virgil uses it with a dative.[8][5]
- 4 BC–65 AD – Seneca uses it of venturesome ships.[8][5]
- 1570s – English credulous is borrowed.[10]
Meanings
Adjective
- Prone to believe, credulous, gullible.[2][1]
- Trusting (in), confiding.[2][1]
- (Medieval Latin) Believing, devout; trusted.[9]
Word family
- crēdulitās
- incrēdulus
Related words
- crēdibilis
- crēdibiliter
- crēditor
- crēditrīx
- crēditum
- crēdō
- incrēdibilis
- incrēdibilitās
- incrēdibiliter
- incrēditus
- English credulous
References
- ^ a b c d e f Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ Thesaurus linguae Latinae (1900–), Leipzig: Teubner; Berlin: De Gruyter; open-access ed., Munich: Bayerische Akademie der Wissenschaften
- ^ 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 e Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ a b Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ a b Georges, Karl Ernst (1913–1918), Ausführliches lateinisch-deutsches Handwörterbuch, 8th ed., ed. Heinrich Georges, Hannover; Leipzig: Hahn
- ^ a b c d Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
- ^ a b Niermeyer, J. F. (1976), Mediae Latinitatis Lexicon Minus, Leiden: Brill
- ^ a b Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
Borrowed into
- English credulous
Cite this entry
“Credulus.” Etymologically, 15 Oct. 2026, etymologically.com/la/credulus. Accessed 15 Oct. 2026.
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