Definition — used to express disgust
A thorough mastery of two-letter words is among the most important skills necessary in the creation of a successful and incomprehensible SCRABBLE board. The ability to add seemingly random letters to existing ones will allow a player to enjoy far greater latitude in placing their words on the board, and will annoy opponents who think that the game should be played with words they recognize. Ew joins another 106 two-letter words, which are aa, ab, ad, ae, ag, ah, ai, al, am, an, ar, as, at, aw, ax, ay, ba, be, bi, bo, by, da, de, do, ed, ef, eh, el, em, en, er, es, et, ex, fa, fe, gi, go, ha, he, hi, hm, ho, id, if, in, is, it, jo, ka, ki, la, li, lo, ma, me, mi, mm, mo, mu, my, na, ne, no, nu, od, oe, of, oh, oi, ok, om, on, op, or, os, ow, ox, oy, pa, pe, pi, po, qi, re, sh, si, so, ta, te, ti, to, uh, um, un, up, us, ut, we, wo, xi, xu, ya, ye, yo, and za.
Monty started growling, but everybody was too busy arguing to notice. "Ew! What's that smell?" Abbie exclaimed suddenly, wrinkling her nose. "It's worse than Dad's old socks!" She turned to the source of the stench and screamed.
— The Advertiser (Adelaide, S. Aus.), 4 Feb. 2015