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monolingual

If you're monolingual, you speak just one language. If you are monolingual, your chances of landing a job as a translator are pretty darn slim.

Your whole family might be monolingual, while your best friend comes from a family that speaks Spanish at home and English at school — in other words, they're bilingual. Being monolingual can be limiting, since you can only communicate clearly with others who speak your language. Learning new languages and becoming bilingual (or even multilingual, speaking several languages) is also good for your brain. The Greek root mono means "one," and the Latin lingua means "tongue" or "language."

Definitions of monolingual
  1. adjective
    using or knowing only one language
    monolingual speakers”
    “a monolingual dictionary”
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    Antonyms:
    multilingual
    using or knowing more than one language
    bilingual
    using or knowing two languages
    polyglot
    having a command of or composed in many languages
    trilingual
    using or knowing three languages
    show more antonyms...
  2. noun
    a person who knows only one language
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