LATIN DICTIONARYLexicon Latīnum
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“controversial” in Latin

The English word controversial itself goes back to Latin contrōversus, through contrōversiālis.

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

controversial
controversus et plenus dissensionis (Cic., of a subject): pugnax et quasi bellatorius (Plin., Ep., 7, 9, 7, pugnax hic et quasi bellatorius stilus): controversus (that which is controverted; e.g., jus controversum, Cic., also that is fond of controversy, quod esset acuta illa gens et controversa natura, Cic.) [controversialis only Sidonius: controversiosus, Liv. controversiosa res, a thing in dispute: controversiosa res, Sen., a disputed point]. Controversial theology, *theologiae ea pars, quae se in discrepantium opinionum disceptatione jactat (Fr. Jacobs): *theologia controversa (after jus controversum, Cic.): or *theologia controversa et plena dissensionis (after Cic.): *controversiae theologicae (after controversiae scholasticae, Quint.).

Quick answer

What is the Latin word for controversial?
The usual Latin words for “controversial” are contrōversus, contrōversiōsus. 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.