barbarize

barbarize (third-person singular simple present barbarizes, present participle barbarizing, simple past and past participle barbarized)

1. (transitive) To cause to become savage or uncultured.
2. (intransitive) To become savage or uncultured.
   • (Can we date this quote?) De Quincey

     The Roman empire was barbarizing rapidly from the time of Trajan.

3. (intransitive) To adopt a foreign or barbarous mode of speech.
   • (Can we date this quote?) John Milton

     The ill habit […] of wretched barbarizing against the Latin and Greek idiom, with their untutored Anglicisms.