LATIN DICTIONARYLexicon Latīnum
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“ostentation” in Latin

The English word ostentation itself goes back to Latin ostendō, through ostentātiō.

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

ostentation
ostentatio sui; jactantia sui; jacotio circulatoria (puffing one’s self off): vana de se praedicatio (if exhibited in words); in anything, ostentatio, venditatio or venditatio quaedam et ostentatio, jactatio (all with alicujus rei).

Quick answer

What is the Latin word for ostentation?
The usual Latin words for “ostentation” are ostentātiō, vendĭtātĭo, iactātiō. 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.