To make Dutch in character, style, or manner; to adapt something to Dutch customs or language.
Compound of 'Dutch' and the productive '-ify' suffix (from Latin '-ficare', meaning to make or cause). English uses '-ify' extensively to create verbs (anglicize, modernize, etc.).
Dutchify is part of a whole family of '-ify' words that let English speakers turn any adjective into a verb of transformation. Shakespeare basically invented this pattern, and it's still working 400 years later.
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