tsʼiłkʼey kole xundelaayi

== Ahtna == === Etymology === tsʼiłkʼey kole (“nine”) + xundelaayi, which forms multiples of ten. === Numeral === tsʼiłkʼey kole xundelaayi (Central, Lower, Western) ninety === References === Kari, James (1990), Ahtna Athabaskan Dictionary, Fairbanks, Alaska: Alaska Native Language Center, →ISBN, page 634