Nepali Sign Language (NSL): Recognition, Alphabet & Status

Nepali Sign Language (NSL), also written Nepalese Sign Language and known in Nepali as Nepali Sanketik Bhasha (नेपाली साङ्केतिक भाषा), is the principal sign language of Nepal's deaf community. It carries the ISO 639-3 code nsp. As an indigenous, visual-gestural language, it is a first language (mother tongue) for many deaf Nepalis, learned and used naturally across generations rather than invented as a teaching aid.

A common misconception is that NSL is simply spoken Nepali expressed with the hands. It is not. NSL is a distinct natural language with its own grammar, word order, spatial syntax and vocabulary that do not mirror the structures of spoken Nepali. This distinction matters legally and culturally, because it establishes deaf Nepalis as a linguistic and cultural community, not merely as people with a medical impairment.

NSL should also be distinguished from 'Signed Nepali', which borrows NSL signs but arranges them in spoken-Nepali word order to represent the oral language visually. Signed Nepali is a manual code for Nepali rather than a language in its own right. NSL is partially standardised and is based informally on the variety used in the Kathmandu Valley, with input from Pokhara and other regions, so signers may encounter dialectal variation between districts.

Formal deaf education in Nepal began in 1966 (2023 BS), when the first school for deaf children was set up in Kathmandu, initially associated with Bir Hospital and founded through the efforts of an ear-nose-throat (ENT) doctor. Bringing deaf children together in one place allowed a shared sign language to take root and spread, a pattern seen with community sign languages worldwide.

Community organisation followed. In 1980 (2037 BS), a group of deaf Kathmandu youths established a Deaf Welfare Association that later became the Kathmandu Association of the Deaf (KAD). KAD became central to documenting and developing the language. Around 1985, Patricia Ross, an American Peace Corps volunteer, worked with KAD on total communication and on the early documentation of NSL, and she was involved in compiling one of the first NSL dictionaries.

The linguistic classification of NSL is still debated by scholars. Proposals range from treating it as a language isolate to grouping it within a wider South Asian sign-language family that includes Indo-Pakistani Sign Language, with studies reporting shared-vocabulary (cognate) rates of roughly 62 to 71 percent between sign varieties in India, Pakistan and Nepal. NSL has also been influenced by contact with other sign languages, but it remains recognised as a stable, indigenous language of Nepal.

Nepal has given sign language explicit legal footing. The Constitution of Nepal 2015 (2072 BS) addresses it directly under the right to education. Article 31(4) provides that visually impaired citizens have the right to free education through Braille script, and that citizens with hearing or speech impairment have the right to free education through sign language, in accordance with law. This makes education in sign language a constitutionally protected right rather than a discretionary service.

The recognition was reinforced by the Rights of Persons with Disabilities Act, 2074 (2017), which modernised Nepal's disability framework in line with the UN Convention on the Rights of Persons with Disabilities. In defining 'language', the Act expressly includes spoken and sign languages and other non-vocal forms of communication, thereby recognising sign language as a language for legal purposes.

Taken together, these instruments treat NSL as a recognised, distinct language and affirm the deaf community's right to receive information, education and services through it. Advocates note that recognition on paper still needs consistent implementation, including trained sign-language teachers, qualified interpreters in courts, hospitals and government offices, and accessible public broadcasting.

The National Federation of the Deaf Nepal (NDFN) is the umbrella body for Nepal's deaf associations and the leading voice in the deaf-rights movement. It was established in 1995 (2052 BS) through the joint effort of local deaf associations and was formerly known as the National Federation of the Deaf and Hard of Hearing (NFDH). It is registered with the District Administration Office, Kathmandu and the Social Welfare Council.

NDFN federates dozens of district and local deaf associations across the country and represents them nationally, and it is a member of the World Federation of the Deaf (WFD), the global umbrella organisation for national deaf associations. Through this network it coordinates advocacy, awareness campaigns and community programmes aimed at improving the education, employment and social inclusion of deaf Nepalis.

A core part of NDFN's mission is the recognition, development and dissemination of Nepali Sign Language as the first language of deaf people. The Federation has worked to document and standardise NSL, publishing a Dictionary of Nepali Sign Language and continuing to collect and coin new signs for its supplements. It has also trained and deployed deaf sign-language instructors and works with government education bodies to raise the quality of deaf education.

Alongside its core vocabulary of signs, NSL uses a manual alphabet, sometimes called the Nepali manual alphabet, for fingerspelling. This one-handed system represents the Devanagari script and was developed by the Kathmandu Association of the Deaf (KAD) with support from UNICEF. It allows signers to spell out words letter by letter using distinct handshapes.

The manual alphabet covers Nepali consonants and vowels, along with letters of the International Manual Alphabet (A to Z) and numbers, so signers can also render Roman-script text and figures. It was designed with some reference to the American and International manual alphabets, but only a handful of handshapes derive directly from those systems, for example the forms for अ (a), ब (b), म (m) and र (r); the rest are indigenous to the Nepali design.

Fingerspelling is not used to sign every word. In everyday NSL, signers use lexical signs, and they switch to the manual alphabet mainly to spell personal names, place names, technical terms or Nepali words that lack an established sign. NSL also features 'initialised' signs, where the handshape incorporates the first Devanagari letter of the corresponding Nepali word, blending fingerspelling into the lexicon.

Deafness in Nepal is best understood through both a linguistic and a statistical lens. Nepal's 2021 Census recorded 51,373 people categorised as deaf, and separately noted that only about 1,784 people reported sign language as their main means of communication. Ethnologue has cited a figure of around 20,000 NSL users (2014). The gap between these numbers reflects the reality that many deaf Nepalis, especially in rural areas, have limited access to schooling in NSL and to the deaf community where the language is transmitted.

Census and disability surveys tend to count hearing loss as a medical condition, which can undercount fluent NSL signers and obscure the community of language users. Access to NSL is uneven across the country: it is strongest in the Kathmandu Valley and larger towns with deaf schools and associations, and thinner in remote districts where a deaf child may grow up with only informal 'home signs'.

For the deaf community, NSL is more than a communication tool; it is a marker of identity and belonging, a theme explored in academic work such as the Gallaudet University Press study 'Signing and Belonging in Nepal'. Expanding early access to NSL, bilingual deaf education and interpreter services is widely seen as the key to turning legal recognition into everyday inclusion.

Sign languages worldwide are celebrated on the International Day of Sign Languages, observed every year on 23 September. The United Nations General Assembly proclaimed the day through resolution A/RES/72/161, adopted on 19 December 2017, following a proposal from the World Federation of the Deaf. The date of 23 September was chosen because it marks the founding of the WFD in 1951.

The day was first observed in 2018 and falls within the International Week of the Deaf, a longer campaign coordinated by the WFD and its member associations, including NDFN in Nepal. Its purpose is to raise awareness of sign languages and to affirm the linguistic identity and human rights of deaf people and sign-language users.

In Nepal, the observance is used by the deaf community and NDFN to promote NSL, press for interpreter access and bilingual education, and remind the public that sign languages are complete natural languages equal in status to spoken tongues. The 2018 launch carried the global theme 'With Sign Language, Everyone is Included!'.