LATIN DICTIONARYLexicon Latīnum
English → Latin

“impropriety” in Latin

The English word impropriety itself goes back to Latin imprō^prĭĕtas, through improprietās.

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

impropriety
indignitas (e.g., of anything, rei): ineptiae (follies, etc.). To be guilty of no impropriety, nihil quod ipso (or ipsis) indignum sit, committere (Caes.): ☞ improprietas, only opposed to proprietas; e.g., verbi, Gell., 1, 22, fin.

Quick answer

What is the Latin word for impropriety?
The usual Latin words for “impropriety” are indignitās, ineptia, committō; also verbum. 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.