LATIN DICTIONARYLexicon Latīnum
verbfourth conjugation, deponent

mentior

mentior (present infinitive mentīrī or mentīrier, perfect active mentītus sum)
Classical[ˈmɛn.ti.ɔr]Ecclesiastical[ˈmɛn.t͡si.or]
Mille Verba core vocabulary

Meaning

  1. deponentwith dativeto lie, cheat, deceive
    Cur es ausus mentiri mihi?Why did you dare to lie to me?c. 200 BCE – 190 BCE, Plautus, Captivi 3.5.46
  2. deponentto pretend, feign
    et assentandum est quicquid hic mentibitur.and I have to agree with whatever lies he dishes up. (literally, “and whatever he feigns must be agreed (with)”)c. 206 BCE, Plautus, Miles Gloriosus 35

Latīnē defined in Latin in our graded readers

falsum dīcō vel mē alium esse fingō; quī mentītur, fidem perdit.
mentior -īrī mentītus — in Mille Verba, Theātrum

Conjugation conjugation 4 deponent

active indicative
formpresentimperfectfutureperfectpluperfectfut. perfect
1st sg.mentiormentiēbar
mentībar
mentiar
mentībor
———
2nd sg.mentīris
mentīre
mentiēbāris
mentiēbāre, mentībāris, mentībāre
mentiēris
mentiēre, mentīberis, mentībere
———
3rd sg.mentīturmentiēbātur
mentībātur
mentiētur
mentībitur
———
1st pl.mentīmurmentiēbāmur
mentībāmur
mentiēmur
mentībimur
———
2nd pl.mentīminīmentiēbāminī
mentībāminī
mentiēminī
mentībiminī
———
3rd pl.mentiunturmentiēbantur
mentībantur
mentientur
mentībuntur
———
active subjunctive
active subjunctive
formpresentimperfectperfectpluperfect
1st sg.mentiarmentīrer——
2nd sg.mentiāris
mentiāre
mentīrēris
mentīrēre
——
3rd sg.mentiāturmentīrētur——
1st pl.mentiāmurmentīrēmur——
2nd pl.mentiāminīmentīrēminī——
3rd pl.mentianturmentīrentur——
imperative
imperative
formactivepassive
pres. 2nd sg.mentīre—
pres. 2nd pl.mentīminī—
fut. 2nd sg.mentītor—
fut. 3rd sg.mentītor—
fut. 3rd pl.mentiuntor—
infinitives & participles
infinitives & participles
formactivepassive
present infinitivementīrī
mentīrier
—
perfect infinitivementītum esse—
future infinitivementītūrum esse—
present participlementiēns—
perfect participlementītus
mentīta, mentītā, mentītae, mentītam, mentītārum, mentītās, mentīte, mentītī, mentītīs, mentītō, mentītōrum, mentītōs
—
future participlementītūrus
mentītūra, mentītūrā, mentītūrae, mentītūram, mentītūrārum, mentītūrās, mentītūre, mentītūrī, mentītūrīs, mentītūrō, mentītūrōrum, mentītūrōs, mentītūrum
mentiendus
mentiundus
gerundmentiendī, mentiendō, mentiendumsupinementītum, mentītū

mentĭor, ītus, 4 (
I. fut. mentibitur, for mentietur, Plaut. Mil. 1, 1, 35; 2, 2, 99; v. Neue, Formenl. 2, p. 448), v. dep. n. and a. [prob. from root men-, whence mens, memini, q. v. Original meaning, to invent; hence],
I. Neutr., to lie, cheat, deceive, etc.: mentiri palam, Plaut. Truc. 1, 2, 89: mentire, id. Poen. 3, 5, 18: adversus aliquem, id. Aul. 4, 7, 9: apud aliquem, id. Poen. 1, 1, 24: sibi, id. Am. 1, 2, 6: mihi, id. Capt. 3, 5, 46; Ter. Eun. 4, 4, 35: aperte, Cic. Ac. 2, 6, 18: in re aliquā, id. Att. 12, 21, 4: de re aliquā, id. N. D. 3, 6, 14: adeo veritatis diligens, ut ne joco quidem mentiretur, Nep. Epam. 3, 1.—With acc. and inf., to pretend, to declare falsely: certam me sum mentitus habere Horam, quae, etc., Ov. Tr. 1, 3, 53; Plin. 12, 15, 34, § 67: mentior nisi or si mentior, a form of asseveration, I am a liar, if, etc.: mentior, nisi et quae alunt illud, corpora sunt, Sen. Ep. 106, 5: si mentiar, inquit, Ultima, quā fallam, sit Venus illa mihi, Ov. F. 4, 227.—Of things, to deceive, impose upon: frons, oculi, vultus persaepe mentiuntur, oratio vero saepissime, Cic. Q. Fr. 1, 1, 6: in quibus nihil umquam ... vetustas mentita sit, id. N. D. 2, 5, 15.—
B. To deceive one's self, mistake: mentire, gnate, Plaut. Trin. 2, 2, 83 Brix ad loc.—
II. Act., to lie or speak falsely about, to assert falsely, make a false promise about; to feign, counterfeit, imitate a shape, nature, etc.: cujus consilio tantam rem mentitus esset, had devised such a falsehood, Sall. C. 48: originem alicujus, Just. 35, 2, 4: auspicium, Liv. 10, 40: titulum Lyciscae, to assume falsely, Juv. 6, 123: noctem, to promise falsely, Prop. 3, 9, 1: cur sese daemonia mentiuntur, Tert. Apol. 23; also, to invent, feign, of a poetical fiction: ita mentitur (sc. Homerus), Hor. A. P. 151; cf.: poëtae Orionem mentiuntur in pelago incidentem, Lact. 4, 15, 21.—Pass.: si a debitore, praelato die, pignoris obligatio mentiatur, Dig. 48, 10, 28.—
B. Trop., of inanim. subjects: semel fac illud, Mentitur tua quod subinde tussis, do what your cough keeps falsely promising, i. e. die, Mart. 5, 39, 6: mentiris juvenem tinctis capillis, id. 3, 43, 1: color, qui chrysocollam mentitur, Plin. 35, 6, 29, § 48: nec varios discet mentiri lana colores, Verg. E. 4, 42: sexum viris denegatum muliebri motu, Col. praef. 1.—Hence, *
1. mentĭens, entis, m. subst., a fallacy, sophism: quomodo mentientem, quem ψευδόμενον vocant, dissolvas, Cic. Div. 2, 4, 11. —
2. mentītus, a, um, Part., in pass. signif., imitated, counterfeit, feigned (poet.): mentita tela, Verg. A. 2, 422: figurae, Ov. M. 5, 326: fama, id. ib. 10, 28: nomen, id. ib. 10, 439; id. H. 11, 73; Sen. Contr. 5, 5, 3; Luc. 2, 512; Val. Fl. 6, 698; 7, 155; Sil. 15, 796; Stat. S. 4, 6, 21; id. Th. 1, 256; 7, 303; 10, 875; Poët. ap. Suet. Oth. 3; Prop. 4 (5), 7, 58. mentiti fictique terrores, Plin. Ep. 6, 20, 15; id. Pan. 81, 3: divinitas, Lact. 2, 16, 2; Quint. 12, 10, 76.

Origins

From mēns, mentis (“mind”) + -iō. Further from Proto-Indo-European *méntis, from *men-. The meaning "to lie" stems from a semantic shift "to be inventive, have second thoughts" > "to lie, conjure up". Compare comminīscor, commentum also from this root and again with these meanings. Further compare cognate Russian мни́мый (mnímyj), сомни́тельный (somnítelʹnyj). Also compare typologically Russian вы́мысел (výmysel) (akin to мысль (myslʹ)).

Descendants
  • Catalanmentir
  • Frenchmentir
  • Italianmentire
  • Occitanmentir
  • Portuguesementir
  • Romanianminți, mințire
  • Spanishmentir
  • Asturianmentir
  • Friulianmintî
  • Galicianmentir

Quick answers

What does mentior mean in Latin?
mentior, a verb, means “to lie, cheat, deceive; to pretend, feign”.
What are the principal parts of mentior?
mentior, mentīrī, mentītus sum (fourth conjugation, deponent).
How do you pronounce mentior?
In classical Latin, [ˈmɛn.ti.ɔr]; in ecclesiastical (church) Latin, [ˈmɛn.t͡si.or].