_U-i-ukúfki_, Uyukúfki, an Upper Creek town, on a creek of the same name, a tributary of Hatchet creek (Hawkins, p. 42); Wiogúfka (1832). The name points to muddy water: o-íwa _water_, ukúfki _muddy_; and is also the Creek name for the Mississippi river. Exists now in Indian Territory. Cf. Potchus'-hátchi.