Ubykh is a Northwest Caucasian language that was historically spoken by the Ubykh people in the region of Abkhazia, now part of Georgia. It is known for its complex consonant system, featuring 84 distinct consonants, making it one of the most phonetically rich languages in the world. The language became extinct in the late 20th century, with the last native speaker, Tevfik Esenç, passing away in 1992. Efforts have been made to document and preserve Ubykh through linguistic studies, but it remains classified as a critically endangered language.