Im•pro•pe•ri•a(im′pro pēr′ē ə),USA pronunciationn. (used with a pl. v.)
Religionreproach (def. 8).
Late Latin, plural of improperium, equivalent. to Latin improper(āre) to blame (apparently an unlearned conflation of improbāre to express disapproval and improprius incorrect or improperus not hastening) + -ium -ium