Guinea-Bissau Sign Language is an incipient

sign language Sign languages (also known as signed languages) are languages that use the visual-manual modality to convey meaning, instead of spoken words. Sign languages are expressed through manual articulation in combination with non-manual markers. Sign l ...

evolving from the single school for the deaf in Guinea-Bissau, which was founded in Bissau in 2003. In 2005 a linguist and

Portuguese Sign Language Portuguese Sign language () is a sign language used mainly by deaf people in Portugal Portugal, officially the Portuguese Republic, In recognized minority languages of Portugal: :* mwl, República Pertuesa is a country located on the Iber ...

teacher found GBSL to still be basic, but with some consistency among students in the school and village use when the students went home.

References

Sign language development in Guinea Bissau
NDCS, 2006. {{sign language navigation Sign language isolates Languages of Guinea-Bissau