Fromarbiter +‎-ō.

• (Classical Latin)IPA^(key): [ˈar.bɪ.trɔr]
• (modern Italianate Ecclesiastical)IPA^(key): [ˈar.bi.tror]

arbitror (present infinitivearbitrārīorarbitrārier,perfect activearbitrātussum);first conjugation,deponent

1. tojudge,arbitrate
2. towitness,observe
3. tobelieve,think

   Synonyms:sentio,reor,existimo,cogito,opinor,iudico,censeo,considero

   • 166BCE,Publius Terentius Afer,Andria60–61:

     Nōn iniūria; nam idarbitror / adprīmē in vītā esse ūtile, ut nēquid nimis.

     Not without reason; forI believe that it is an especially useful [rule] in life, that nothing [be done] in excess.

4. toconsider, be of theopinion

   Synonyms:considero,reputo,existimo,puto,pendo

   • 405CE,Jerome,Vulgate Iob.13.24:

     Cur faciem tuam abscondis etarbitraris me inimicum tuum?

     Why hide you your face, andhold me for your enemy?

   • c. 52BCE,Julius Caesar,Commentarii de Bello GallicoVII.18:

     Quo nostros postero die pabulatum venturosarbitraretur.

     Where hebelieved that our [soldiers] would come the next day to forage.

5. toexamine,consider,weigh

   Synonyms:aspiciō,cōnsīderō,circumspiciō,reputō,exsequor

¹The present passive infinitive in-ier is a rare poetic form which is attested.

• The second-person future active imperative in-minō is attested in Plautus,Epidicus 695.

• arbitror in Karl Ernst Georges,Ausführliches lateinisch-deutsches Handwörterbuch
• “arbitror”, inCharlton T. Lewis and Charles Short (1879),A Latin Dictionary, Oxford: Clarendon Press
• “arbitror”, inCharlton T. Lewis (1891),An Elementary Latin Dictionary, New York: Harper & Brothers
• “arbitror”, inGaffiot, Félix (1934),Dictionnaire illustré latin-français, Hachette.
• Carl Meißner; Henry William Auden (1894),Latin Phrase-Book‎^[1], London:Macmillan and Co.
  • to feel superior to the affairs of life:res humanas infra se positas arbitrari
    
  • to consider a thing beneath one's dignity:aliquid infra se ducere orinfra se positum arbitrari
    
• arbitror inRamminger, Johann (16 July 2016 (last accessed)),Neulateinische Wortliste: Ein Wörterbuch des Lateinischen von Petrarca bis 1700‎^[2], pre-publication website, 2005-2016

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