“ Yuchi is spoken in Oklahoma USA by just five people all aged over 75. Yuchi is an isolate language that is it cannot be shown to be related to any other language spoken on earth . Their own name for themselves is Tsoyaha meaning “Children of the Sun”. Yuchi nouns have 10 genders indicated by word endings six for Yuchi people depending on kinship relations to the person speaking one for non-Yuchis and animals and three for inanimate objects horizontal vertical and round . ”
Peter K Austin’s top 10 endangered languages | Books | guardian.co.uk
