• WordNet 3.6
    • v barbarise make crude or savage in behavior or speech "his years in prison have barbarized the young man"
    • v barbarise become crude or savage or barbaric in behavior or language
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Chambers's Twentieth Century Dictionary
    • v.t Barbarise to make barbarous: to corrupt as a language
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Chambers's Twentieth Century Dictionary
L.—Gr. barbaros, foreign, lit. stammering, from the unfamiliar sound of foreign tongues.


In literature:

But we, who live remote from history and monuments, we must read or we must barbarise.
"The Rise of Silas Lapham" by William Dean Howells
But the process of "barbarisation" was not everywhere so swift.
"Essays in the Study of Folk-Songs (1886)" by Countess Evelyn Martinengo-Cesaresco