American sign language

American Sign Language (ASL)
Region	North America, West Africa, Central Africa
Native speakers	250,000–500,000 in the United States (1972) L2 users: Used as L2 by many hearing people and by Hawaii Sign Language speakers.
Language family	French Sign-based (possibly a creole with Martha's Vineyard Sign Language) American Sign Language (ASL)
Dialects	Black American Sign Language Bolivian Sign Ghanaian Sign Nigerian Sign Francophone African Sign
Writing system	None are widely accepted si5s (ASLwrite), ASL-phabet, Stokoe notation, SignWriting
Official status
Official language in	none
Recognised minority language in	Ontario only in domains of: legislation, education and judiciary proceedings. 40 US states recognize ASL to varying degrees, from a foreign language for school credits to the official language of that state's deaf population.
Language codes
ISO 639-3
Glottolog	asli1244  (ASL family) amer1248  (ASL proper)
Areas where ASL or a dialect/derivative thereof is the national sign language   Areas where ASL is in significant use alongside another sign language

American Sign Language (ASL) is the predominant sign language of Deaf communities in the United States and most of anglophone Canada. Besides North America, dialects of ASL and ASL-based creoles are used in many countries around the world, including much of West Africa and parts of Southeast Asia. ASL is also widely learned as a second language, serving as a lingua franca. ASL is most closely related to French Sign Language (LSF). It has been proposed that ASL is a creole language of LSF, although ASL shows features atypical of creole languages, such as agglutinative morphology.

ASL originated in the early 19th century in the American School for the Deaf (ASD) in Hartford, Connecticut, from a situation of language contact. Since then, ASL use has propagated widely via schools for the deaf and Deaf community organizations. Despite its wide use, no accurate count of ASL users has been taken, though reliable estimates for American ASL users range from 250,000 to 500,000 persons, including a number of children of deaf adults. ASL users face stigma due to beliefs in the superiority of oral language to sign language, compounded by the fact that ASL is often glossed in English due to the lack of a standard writing system.

ASL signs have a number of phonemic components, including movement of the face and torso as well as the hands. ASL is not a form of pantomime, but iconicity does play a larger role in ASL than in spoken languages. English loan words are often borrowed through fingerspelling, although ASL grammar is unrelated to that of English. ASL has verbal agreement and aspectual marking and has a productive system of forming agglutinative classifiers. Many linguists believe ASL to be a subject–verb–object (SVO) language, but there are several alternative proposals to account for ASL word order.