The word touchscreens 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: 22
Highest Scoring Words With Friends™ Play In The Letters touchscreens
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Seven Letter Word Alert: (97 words)
cenotes, censers, censors, censure, centers, centres, chouser, chouses, coerces, coheres, concert, conches, concurs, concuss, cornets, corsets, couches, counter, courses, creches, cresset, crochet, crushes, echoers, encores, encrust, ensures, enthuse, escorts, estrone, estrous, etchers, heteros, hornets, hotness, hunters, necrose, nesters, neuters, notcher, notches, octenes, oestrus, ousters, outsees, rechose, recount, recuses, rehones, rehouse, renests, rescues, resects, resents, reshoes, retches, retouch, retunes, scenter, sconces, scouter, screech, screens, scrunch, secerns, secrets, sectors, secures, shorten, shouter, shunter, soccers, sources, sourest, stenose, stereos, stoners, stuccos, succors, sucrose, tensors, tenures, thereon, thrones, tonsure, torches, toruses, toucher, touches, trochee, trounce, uncross, unerect, unhorse, unreset, unrests, unsorts