A term used to describe someone who does not know how to speak, read or write fluently in any language that is not their mother tongue. Example: I am multiculturally illiterate because I can only speak, write, and read fluently in English.
MULTICULTURALLY ILLITERATE
Meaning of MULTICULTURALLY ILLITERATE in English
Slang English vocab. Английский сленговый словарь. 2012