The word unappetizingness cannot be made in Words With Friends™. It is 16 letters long, too long to fit on a WordsWithFriends board (15 letters max).
Highest Scoring Words With Friends™ Plays In The Letters unappetizingness
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Seven Letter Word Alert: (137 words)
antigen, aptness, asinine, augites, aunties, easiest, engines, ensigns, ensuing, ensuite, eupneas, genesis, gentian, genuine, genuses, gipsies, guanine, guineas, guppies, ignites, ingests, innings, insteps, intense, issuing, nannies, nappies, napping, neatens, negates, nesting, ninepin, nipping, paining, panning, pansies, panties, panting, passing, pasteup, pasties, pasting, patines, pausing, peanuts, peeping, penguin, penises, pennant, pennies, penning, pentane, pepsins, peptise, peptize, petnaps, petunia, pianist, piazine, pieties, pigpens, pinenes, pinenut, pinesap, pinnate, pinning, pungent, puniest, punning, punting, pupates, sagiest, sapping, sateens, seating, seeping, seitans, seitens, seizing, senates, sensate, sensing, sestina, sestine, siennas, signees, signets, sinning, sinuate, sipping, sizings, sniping, snippet, spinets, spinnet, spiting, steppes, stepups, stuping, suiting, sunnies, sunning, suntans, supping, sustain, tanning, tannins, tapings, tapping, teasing, teazing, tenpins, tensing, tiepins, tinning, tipping, tunings, uneaten, unities, uniting, unitize, unseats, unseize, unsnaps, unspent, unstage, unstain, upsizes, upstage, zaniest, zapping, zeatins, zesting, zingani, zinnias, zipping, zipties