The language primarily used by Deaf people in the United States is American Sign Language (ASL), and many Deaf people acquire English as a second language. As is true for anyone who acquires English as a second language, there may be differences in English fluency. Fluency or lack of fluency in English is never a reflection of an individual’s intellect.

ASL is:

• An established language with its own syntax and grammar distinct from English. Signs are not gestures.
• Primarily used in the United States among people who are Deaf.
• Not used by everyone who is Deaf or Hard of Hearing.
• Not universal. Each country typically has its own sign language, even England, that is different from ASL (see Use of CDI).