This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

n. a person who appropriates something

n. the religious organization that owns the income of a benefice

n. One who appropriates.

n. A spiritual corporation possessed of an appropriated benefice; also, an impropriator.

n. One who appropriates or takes to his own use.

n. In ecclesiastical law, one who is possessed of an appropriated benefice. See appropriate, v., 4.

n. someone who takes for his or her own use (especially without permission)

"I think there's a compelling case to be made that, by and large, an appropriator from a dominant culture carrying out such an act is likely to be doing so for negative motives and to negative results, that historically such cross-cultural sacrilege is motivated by misrepresentation and discrimination and aimed towards furthering misrepresentation and discrimination."

acquirer   

preemptor    kleptomaniac    poacher