The Collaborative International Dictionary
Impropriating
Impropriate \Im*pro"pri*ate\, v. t. [imp. & p. p. Impropriated; p. pr. & vb. n. Impropriating.] [Pref. im- in + L. propriatus, p. p. of propriare to appropriate. See Appropriate.]
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To appropriate to one's self; to assume. [Obs.]
To impropriate the thanks to himself.
--Bacon. (Eng. Eccl. Law) To place the profits of (ecclesiastical property) in the hands of a layman for care and disbursement.
Wiktionary
impropriating
vb. (present participle of impropriate English)