Their language consisted of varieties of
Ngiyampaa, which was composed of two dialects, Ngiyambaa Wangaaypuwan and Wayilwan Ngiyambaa. The
Wangaaypuwan (with
wangaay) people are so called because they use
wangaay to say "no", as opposed to the Ngiyampaa in the Macquarie Marshes and towards
Walgett, who were historically defined separately by colonial ethnographers as
Wayilwan, so-called because their word for "no" was
wayil. The distinction between Ngiyampaa, Wangaaypuwan, and Wayilwan traditionally drawn, and sanctioned by the classification of
Norman Tindale, may rest upon a flawed assumption of marked "tribal" differences based on Ngiyampaa linguistic discriminations between internal groups or clans whose word for "no" varied. ==Country==