Merriam-Webster's Collegiate® Dictionary, 11th Edition
APPROPRIATE
I. transitive verb (-ated; -ating)
Etymology: Middle English, from Late Latin appropriatus, past participle of appropriare, from Latin ad- + proprius own
Date: 15th century
to take exclusive possession of ; annex , to set apart for or assign to a particular purpose or use , to take or make use of without authority or right, appropriable adjective appropriator noun
II. adjective
Date: 15th century
especially suitable or compatible ; fitting , see: fit appropriately adverb appropriateness noun