Americanizer

noun
Amer·​i·​can·​iz·​er | \ -zə(r)\
plural -s

Definition of Americanizer

1 : one entrusted with or engaged in Americanizing immigrants or resident aliens in the U.S.
2 : an ardent advocate of Americanism

First Known Use of Americanizer

1862, in the meaning defined at sense 1

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