The word unsightliness is playable in Words With Friends™, no blanks required. Because it is longer than 7 letters, you would have to play off an existing word or do it in several moves.
Words With Friends™ Letter Score: 21
Highest Scoring Words With Friends™ Play In The Letters unsightliness
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Seven Letter Word Alert: (81 words)
eluting, english, enlight, enlists, ensigns, ensuing, glisten, gluiest, glutens, gunless, gussets, gussies, gutless, hinnies, hinting, hissies, hissing, hunting, hussies, husting, hustles, ignites, ingests, inlines, insight, insists, insulin, insults, inulins, issuing, lengths, lensing, lighten, lignins, lignite, linings, linnets, listens, listing, luniest, lushest, lusting, nesting, nightie, sensing, shingle, shining, shutins, signets, silents, silting, singles, singlet, sinless, sinuses, sleighs, sleight, sleuths, slights, slushes, suiting, sunless, sunnies, sunsets, tensing, tilings, tingles, tinsels, tissues, tugless, tunings, tunnels, tussles, ugliest, unhinge, unities, uniting, unlists, unsling, utensil, utilise