native people of Arizona, also their language, of the Yuman family, the name probably is from O'odham (Piman) yu'mi and represents the name the Piman peoples applied to the Yuma people.

"delicious," 1899, from baby talk. Yum-yum as an exclamation of pleasure is recorded from 1878.

1906, variant of yes.

1982, acronym from "young urban professional," ousting competition from yumpie (1984), from "young upward-mobile professional," and yap (1984), from "young aspiring professional." The word was felt as an insult by 1985.

"house or hut of the natives of north and central Asia," 1784, ultimately from Russian yurta, from a Turkic language and originally meaning "home, dwelling."

also Y.W.C.A., 1874, initialism (acronym) of Young Women's Christian Association.