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This glossary covers a wide range of topics and includes terms that describe people, technology, concepts, and more. Some of the terms, marked by this icon , are widely considered to be

This term is generally agreed to be offensive toward or a person or group of people. We strongly recommend you do not use this term and instead use a term not usually thought to be offensive. While it is possible that some people will not be offended by this term, just as some people will be offended by other terms when no harm is intended, it is best to avoid. Remember that what is considered offensive can also change over time, by scenario, and by relationship. We provide this library of terms for informational purposes and we welcome feedback to help us get it right.


  • Closed captions

    Captions exist to make a video’s audio accessible to audiences with hearing needs or who prefer reading along....

  • Crazy

    A term often casually used to describe things or people that are wild and surprising. Many feel that this term is...

  • Cystic Fibrosis

    A genetic disease that damages the lungs and other parts of the body.

  • Cleft palate

    A gap in the roof of the mouth.

  • Cripple, Crippled

    Derogatory term for a person that has a disability or impairment, usually referring to someone who has limited or...