LATIN DICTIONARYLexicon Latīnum
English → Latin

“treat” in Latin

The English word treat itself goes back to Latin trahō, through tracto.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

treat v.
Transitively, To use in a certain manner, aliquem tractare, habere; well, ill, etc., bene, male, etc. To treat one kindly, liberaliter habere or tractare aliquem: to treat with respect, honorifice tractare aliquem: to treat with the greatest respect, summo honore afficere aliquem: to treat one with indulgence, indulgentia tractare aliquem; indulgere alicui (Vid: Herzog, Caes., B.G., 1, 40): to treat one in a hostile manner, in hostium numero habere; pro hoste habere or ducere: to treat one in the same manner as another, aliquem eodem loco habere quo alium: to treat with contempt, contumeliose agere (de).
To manage, tractare aliquem or aliquid (the proper word): curare aliquem or aliquid (to attend to, wait upon): disputare, disserere de re (to handle; of a litterary subject). To treat a disease, curare morbum; adhibere morbo curationem: to treat a patient, aliquem tractare, curare: to suffer one’s self to be treated (of a patient), se curari pati: to suffer a patient to be treated by another physician, aegrotum alii medico tradere.
To handle, discuss (a subject), agere rem, or dealiqua re (in general; Vid: Ochs: Cic., Ecl., p. 230): disputare, disserere de aliqua re (of the disputations of learned men; and disserere especially of a connected discourse; Vid: Cic., Ecl., p. 12 and 354): sermonem habere de re (to maintain a conversation; of two or more): dicere de aliqua re (to speak of): scribere de aliqua re: scriptura persequi aliquid (to write of). A book which treats of, etc. liber qui est or qui est conscriptus de etc. (☞ but not simply liber de, etc.): the books which usually treat concerning contempt of death, libri quos scribunt de contemnenda morte: to treat briefly of anything, paucis absolvere aliquid.
To entertain, Vid:
Intransitively. To negotiate, agere de re: postulare conditions alicujus rei. To treat with anyone, agere cum aliquo de aliqua re (in general); colloqui cum aliquo de aliqua re (by word of mouth); colloqui per internuncios cum aliquo, et de aliqua re mentionem facere (by the intervention of a third party): to treat for a thing, cum aliquo agere (etc.), ut.

Quick answer

What is the Latin word for treat?
The usual Latin words for “treat” are disputō, postulō, bonus. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.