From Wiktionary, the free dictionary

From Proto-Italic *tlokʷōr, from Proto-Indo-European *telkʷ-;^[1] see also Sanskrit तर्क (tarka, “conjecture”), Old Church Slavonic тлъкъ (tlŭkŭ, “interpreter”) and Old Irish do·tluchethar (“to ask”), ad·tluchedar (“to thank”).

• (Classical Latin) IPA^(key): [ˈɫɔ.kʷɔr]
• (modern Italianate Ecclesiastical) IPA^(key): [ˈlɔː.kʷor]

loquor (present infinitive loquī or loquier, perfect active locūtus sum); third conjugation, deponent

1. to say, speak, tell, talk, utter

   Synonyms: aio, effor, for, dīcō, inquam, alloquor, oro

   vīsne mēcum latīnē loquī? ― Do you want to speak Latin with me?

   rēs ipsa loquitur. ― The matter speaks for itself.
2. to declare, speak, or state more formally as in a legal context or in defense of someone or something

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

• “loquor”, in Charlton T. Lewis and Charles Short (1879), A Latin Dictionary, Oxford: Clarendon Press
• “loquor”, in Charlton T. Lewis (1891), An Elementary Latin Dictionary, New York: Harper & Brothers
• “loquor”, in Gaffiot, Félix (1934), Dictionnaire illustré latin-français, Hachette.
• Carl Meißner; Henry William Auden (1894), Latin Phrase-Book‎^[1], London: Macmillan and Co.
  • to be unable to speak for emotion: prae lacrimis loqui non posse
    
  • the matter speaks for itself: res ipsa (pro me apud te) loquitur
    
  • to make contradictory, inconsistent statements: pugnantia loqui (Tusc. 1. 7. 13)
    
  • (1) to speak vehemently, passionately; (2) to speak pompously, boastfully: magnifice loqui, dicere
    
  • (1) to speak Latin, (2) to speak good Latin (also bene latine), (3) to express oneself clearly: latine loqui (Brut. 45. 166)
    
  • to speak the Greek language: graece or graeca lingua loqui
    
  • to think one thing, say another; to conceal one's opinions: aliter sentire ac loqui (aliud sentire, aliud loqui)
    
  • to speak personally to..: coram loqui (cum aliquo)
    
  • speak up, please: clarius loquere