foreignism

[ fawr-uh-niz-uh m, for- ]
/ ˈfɔr əˌnɪz əm, ˈfɒr- /

noun

a foreign custom, mannerism, etc.
any trait, deviating from accepted speech standards, derived from a foreign language.
imitation of anything foreign.
a foreign quality.

Origin of foreignism

First recorded in 1850–55; foreign + -ism

British Dictionary definitions for foreignism

foreignism
/ (ˈfɒrɪˌnɪzəm) /

noun

a custom, mannerism, idiom, etc, that is foreign
imitation of something foreign