Im·pro·pri·ate v. t. [imp. & p. p. Impropriated p. pr. & vb. n. Impropriating ]
1. To appropriate to one's self; to assume. [Obs.]
To impropriate the thanks to himself. --Bacon.
2. Eng. Eccl. Law To place the profits of (ecclesiastical property) in the hands of a layman for care and disbursement.