Proto-Yenisseian: *χuχ
Meaning: warm (of water); windless (of weather)
Ket: qūkśeŋ1 'warm (of water)'; qūk 'quietly, windlessly' (Werner 2, 140: qū / qūk)
Yug: xūk (also xu1 (Werner 2, 141))
Kottish: hukaičei "warming"; hukai bāttaŋ "to warm"
Comments: Werner 2, 140 <*qugǝ>. The forms Ket qū, Yug xu (cited ibid.) allow to narrow the reconstruction to PY *χuχ (not *χuk- ~ -g-, -χ- as in ССЕ 305).