The word ghostwritten 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: 20
Highest Scoring Words With Friends™ Plays In The Letters ghostwritten
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Seven Letter Word Alert: (78 words)
egotist, entwist, ghettos, goiters, goitres, goriest, gothite, growths, heroins, histone, hitters, hogties, hornets, horsing, hosting, hottest, ignores, inshore, intorts, norites, ogreish, orients, regions, reshown, resight, resting, retints, retwist, rotting, setting, shewing, shoeing, shoring, shorten, showier, showing, sighter, snotter, snowier, sorting, stewing, stinger, stonier, storing, stowing, testing, thiones, thorite, thrones, throngs, tighten, tighter, tinters, tithers, titters, tonight, totters, triones, twiners, twinges, twinset, twister, twitter, twonies, weights, wetting, whiners, whinger, whinges, whitens, whitest, wigeons, wingers, winters, withers, witters, writhes, written