LATIN DICTIONARYLexicon Latīnum
verbfirst conjugation, deponent

arbitror

arbitror (present infinitive arbitrārī or arbitrārier, perfect active arbitrātus sum)
Classical[ˈar.bɪ.trɔr]Ecclesiastical[ˈar.bi.tror]
№ 963 of the 1,000 commonest wordsMille Verba core vocabulary

Meaning

  1. deponentto judge, arbitrate
  2. deponentto witness, observe
  3. deponentto believe, think
    Nōn iniūria; nam id arbitror / adprīmē in vītā esse ūtile, ut nēquid nimis.Not without reason; for I believe that it is an especially useful [rule] in life, that nothing [be done] in excess.166 BCE, Publius Terentius Afer, Andria 60–61
  4. deponentto consider, be of the opinion
    Cur faciem tuam abscondis et arbitraris me inimicum tuum?Why hide you your face, and hold me for your enemy?c. 347 CE – 420 CE, Hieronymus, Vulgate Iob.13.24
    Quo nostros postero die pabulatum venturos arbitraretur.Where he believed that our [soldiers] would come the next day to forage.c. 52 BCE, Julius Caesar, Commentarii de bello Gallico VII.18
  5. deponentto examine, consider, weigh

Latīnē defined in Latin in our graded readers

putō, exīstimō; quod vērum esse crēdō, id arbitror.
arbitror -ārī arbitrātus — in Mille Verba, Basilica et Iūs

Choosing the right word Döderlein's Latin Synonyms

Censere · Judicare · Arbitrari · Æstimare · Opinari · Putare · Reri · Autumare · Existimare · Credere.

Censere; Judicare; Arbitrari; Æstimare; Opinari; Putare; Reri; Autumare; Existimare; Credere. 1. Censere, judicare, arbitrari, æstimare, denote passing judgment with competent authority, derived from a call to the office of judge; censere, as possessing the authority of a censor, or of a senator giving his vote; judicare, as possessing that of a judge passing sentence; arbitrari, as possessing that of an arbitrator; æstimare (αἰσθέσθαι), as that of a taxer, making a valuation; whereas, opinari, putare, reri, and autumare, denote passing judgment under the form of a private opinion, with a purely subjective signification; opinari (ὀπίς) as a mere sentiment and conjecture, in opp. to a clear conviction and knowledge. Cic. Orat. i. 23. Mur. 30. Tusc. iv. 7. Rosc. Am. 10; putare, as one who casts up an account; reri as a poetical, and autumare as an antiquated term. 2. Æstimare denotes passing judgment under the form of the political function of an actual taxer, to estimate anything exactly, or according to its real value, or price in money; but existimare, as a moral function, to estimate anything according to its worth or truth; hence Cicero contrasts existimatio, not æstimatio, as a private opinion, with competent judgment, judicio; Cluent. 29. Verr. v. 68. 3. Censere denotes judgment and belief, as grounded upon one’s own reflection and conviction; credere, as grounded on the credit which is given to the testimony of others. 4. Opinor, parenthetically, implies modesty, like οἶμαι; whereas credo implies irony, like ὡς ἔοικεν, sometimes in propositions that are self-evident, whereby the irony reaches the ears of those to whom the truth could not be plainly spoken or repeated, or who might be inclined to doubt it; sometimes, in absurd propositions which a man thinks fit to put in the mouth of another; sometimes, in propositions so evident as scarcely to admit of controversy. (v. 300.)

Conjugation conjugation 1 deponent

active indicative
formpresentimperfectfutureperfectpluperfectfut. perfect
1st sg.arbitrorarbitrābararbitrābor———
2nd sg.arbitrāris
arbitrāre
arbitrābāris
arbitrābāre
arbitrāberis
arbitrābere
———
3rd sg.arbitrāturarbitrābāturarbitrābitur———
1st pl.arbitrāmurarbitrābāmurarbitrābimur———
2nd pl.arbitrāminīarbitrābāminīarbitrābiminī———
3rd pl.arbitranturarbitrābanturarbitrābuntur———
active subjunctive
active subjunctive
formpresentimperfectperfectpluperfect
1st sg.arbitrerarbitrārer——
2nd sg.arbitrēris
arbitrēre
arbitrārēris
arbitrārēre
——
3rd sg.arbitrēturarbitrārētur——
1st pl.arbitrēmurarbitrārēmur——
2nd pl.arbitrēminīarbitrārēminī——
3rd pl.arbitrenturarbitrārentur——
imperative
imperative
formactivepassive
pres. 2nd sg.arbitrāre—
pres. 2nd pl.arbitrāminī—
fut. 2nd sg.arbitrātor
arbitrāminō
—
fut. 3rd sg.arbitrātor—
fut. 3rd pl.arbitrantor—
infinitives & participles
infinitives & participles
formactivepassive
present infinitivearbitrārī
arbitrārier
—
perfect infinitivearbitrātum esse—
future infinitivearbitrātūrum esse—
present participlearbitrāns—
perfect participlearbitrātus
arbitrāta, arbitrātā, arbitrātae, arbitrātam, arbitrātārum, arbitrātās, arbitrāte, arbitrātī, arbitrātīs, arbitrātō, arbitrātōrum, arbitrātōs
—
future participlearbitrātūrus
arbitrātūra, arbitrātūrā, arbitrātūrae, arbitrātūram, arbitrātūrārum, arbitrātūrās, arbitrātūre, arbitrātūrī, arbitrātūrīs, arbitrātūrō, arbitrātūrōrum, arbitrātūrōs, arbitrātūrum
arbitrandus
gerundarbitrandī, arbitrandō, arbitrandumsupinearbitrātum, arbitrātū

Phrases from Meissner's Latin Phrase-Book

arbitratu, arbitrio tuo
just as you wish.
res humanas infra se positas arbitrari
to feel superior to the affairs of life.
aliquid infra se ducere or infra se positum arbitrari
to consider a thing beneath one's dignity.

arbĭtror (
I. act. arbitro, v. infra; arch. inf. arbitrarier, Plaut. Aul. 4, 1, 21), ātus, 1, v. dep. arbiter.
I. In gen., to be a hearer or beholder of something (v. arbiter, I.), to observe, perceive, hear, etc. (in this sense only ante- and post-class.): dicta alicujus, Plaut. Capt. 2, 1, 24; id. Aul. 4, 1, 21; App. M. 10, p. 246, 16; 3, p. 138, 23; 7 init.: domus attiguae fortunas arbitraturus, id. ib. 4, p. 148, 8.—Hence of the mind, to examine, consider, weigh: diligentius carmina Empedoclis, Gell. 4, 11, 10.—
II. Esp.
A. T. t. of judic. lang. (cf. arbiter, II.), to make a decision, give judgment or sentence: si in eo, quod utroque praesente arbitratus est, arbitrio paritum non esset, Dig. 4, 8, 44; 6, 1, 35.—Hence, fidem alicui arbitrari, to adjudge, i. e. to give, credit to one, to put faith in, Plaut. Bacch. 3, 6, 41.—Of witnesses, as t. t., to testify, to declare or announce, give evidence: qui testimonium diceret, ut arbitrari se diceret, etiam quod ipse vidisset, Cic. Ac. 2, 47, 146: qui primum illud verbum consideratissimum nostrae consuetudinis arbitror, quo nos etiam tunc utimur, cum ea dicimus jurati, quae comperta habemus, quae ipsi vidimus, ex toto testimonio suo sustulit, atque omnia se scire dixit, id. Font. 9: mortuum inde arbitrari, Liv. 3, 13, 3; 4, 40.—
B. 1.. In gen., to be of the opinion, to believe, consider as, = νομίζω (most freq. in prose; a favorite word with Cic.): Bene facta male locata male facta arbitror, Enn. ap. Cic. Off. 2, 18, 62: gratum arbitratur esse id a vobis sibi, Plaut. Am. prol. 48: nefas esse arbitrari Gracchos laudare, Cic. Agr. 2, 10: Falsum arbitror radices arborum vetustate minui, Plin. 16, 31, 56, § 130: Justum autem arbitror suscitarc vos, Vulg. 2 Pet. 1, 13: scelestissimum te arbitror, Plaut. Am. 2, 1, 2: arbitraris me inimicum tuum, Vulg. Job, 13, 24; ib. Philipp. 3, 8: si hoc minus ad officium tuum pertinere arbitrabere, suscipiam partes, quas alienas esse arbitrabar, Cic. Verr. 2, 4, 37: ut in ceteris artibus ... similiter arbitror in hac ratione dicendi etc., id. de Or. 2, 16, 70; id. Quinct. 34; Cic. Verr. 2, 169; id. Clu. 17; id. Cat. 1, 17; id. Arch. 30; id. Deiot. 24; id. Mil. 21: tamen, ut arbitror, auctoritate advocatorum adducti in veritate manserunt, id. Clu. 63; so id. Sex. Rosc. 82; id. Imp. Pomp. 58; id. Clu. 176: ut ego arbitror, id. Sest. 16; id. Pis. 68: sicut arbitror, id. Clu. 50: ego quod ad me attinet (itemque arbitror ceteros) idcirco taceo, quod, etc., id. ad Q. Fr. 2, 1: arbitratus id bellum celeriter confici posse, Caes. B. G. 3, 28: Jugurtham esse arbitrati cum magno gaudio obvii procedunt, thinking it to be Jugurtha, Sall. J. 69, 1: non satis tuta eadem loca sibi arbitratus, Nep. Alcib. 9, 1; so id. Timoth. 3, 3 al.—
2. To think, suppose, as opp. to knowing: Arbitror: Certum non scimus, Ter. Eun. 1, 2, 30: si hunc noris satis, Non ita arbitrere, id. And. 5, 4, 12: De. Sanumne credis te esse? Mi. Equidem arbitror, id. Ad. 4, 7, 30: Quid consilii ceperis, quem nostrūm ignorare arbitraris? Cic. Cat. 1, 1; id. Imp. Pomp. 31: arbitrantur se posse fugere, Vulg. Esth. 16, 4; ib. Matt. 10, 34.!*?
a. Act. form arbĭtro, āre: te si arbitrarem dignum, Plaut. Ps. 4, 2, 57: Probiores credo arbitrabunt, id. Stich. 1, 2, 87. —
b. Arbitror in pass. signif.: continuo arbitretur (i. e. eligatur, quaeratur) uxor filio tuo, Plaut. Ep. 2, 2, 82: cum ipse praedonum socius arbitraretur, Cic. Verr. 2, 5, 41; id. Mur. 16 fin.; id. Att. 1, 11; cf. Zumpt ad Cic. Verr. l. l.: quaestio in utramque partem a prudentibus viris arbitrata, i. e. judicata, Gell. 1, 13: sumptus funeris arbitrantur pro facultatibus defuncti, are estimated, Dig. 11, 7, 12; so ib. 4, 8, 27; 2, 15, 8: ex scriptis eorum, qui veri arbitrantur, ὑπολαμβάνονται, Cael. ap. Prisc. p. 792 P.

Origins

Proto-Indo-European *-h₂ Proto-Indo-European *-éh₂ Proto-Indo-European *-yéti Proto-Indo-European *-eh₂yéti Proto-Indo-European *-h₂tiinflu. Proto-Italic *-ājō Proto-Italic *-āō Latin -ō Latin arbitror From arbiter + -ō.

Descendants
  • Portuguesealvidrar
  • Catalanarbitrar
  • Englisharbitrate
  • Frencharbitrer
  • Italianarbitrare
  • Portuguesealvitrar
  • Portuguesearbitrar
  • Romanianarbitra
  • Spanisharbitrar
  • Asturianalbidrarfrom Old Leonese alvedrar

Quick answers

What does arbitror mean in Latin?
arbitror, a verb, means “to judge, arbitrate; to witness, observe; to believe, think”.
What are the principal parts of arbitror?
arbitror, arbitrārī, arbitrātus sum (first conjugation, deponent).
How do you pronounce arbitror?
In classical Latin, [ˈar.bɪ.trɔr]; in ecclesiastical (church) Latin, [ˈar.bi.tror].