sign language

noun

Synonyms of sign languagenext
1
: any of various formal languages employing a system of hand gestures and their placement relative to the upper body, facial expressions, body postures, and finger spelling especially for communication by and with deaf people
But true sign languages are in fact complete in themselves: their syntax, grammar, and semantics are complete, but they have a different character from that of any spoken or written language.Oliver Sacks
Sign language relies mainly on the signer's hand, but facial expressions and body movements are also important.Mark Prigg
2
: an unsystematic method of communicating chiefly by manual gestures (as by people speaking different languages)
I decided to cadge a lift from a Lebanese who only spoke Arabic, so we had to converse in sign language.Robert Fox

Examples of sign language in a Sentence

Recent Examples on the Web
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Thanks to her knowledge of sign language, Porter was also able to help the oldest of the siblings, who couldn't speak due to the way cerebral palsy affected the muscles of her mouth. David Chiu, PEOPLE, 16 May 2026 This year’s winners, Samuel Nagel and Paul Feiler, developed a wearable that translates the sign language into text, which is displayed on a screen that non-signers can read. Justin Fenner, Robb Report, 15 May 2026 There was also the sign language with Kimiko, and the connection. Los Angeles Times, 13 May 2026 Another adjustment on set was with his daughter played by Toscano tending to follow his hands as Insolera communicated using sign language, rather than look into his eyes. Etan Vlessing, HollywoodReporter, 11 May 2026 See All Example Sentences for sign language

Word History

First Known Use

1824, in the meaning defined at sense 1

Time Traveler
The first known use of sign language was in 1824

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Cite this Entry

“Sign language.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sign%20language. Accessed 21 May. 2026.

Kids Definition

sign language

noun
1
: a formal language using a system of hand movements for communication (as by the deaf)
2
: a way of communicating mainly by hand and arm movements as often used by people speaking different languages

Medical Definition

sign language

noun
: any of various formal languages employing a system of hand gestures and their placement relative to the upper body, facial expressions, body postures, and finger spelling especially for communication by and with deaf people
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