The word groundsheet 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: 18
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (84 words)
dehorns, dehorts, dengues, denotes, denture, detours, detuner, detunes, drought, endorse, endures, ensured, enthuse, estrone, genders, gesture, ghosted, godsent, gourdes, grounds, groused, grouted, grunted, guerdon, guested, gunshot, gunters, hedgers, heteros, hornets, hungers, hunters, negroes, neuters, nutseed, regents, rehoned, rehones, rehouse, reshoed, resound, retuned, retunes, rodents, rotunds, roughed, roughen, shorted, shorten, shotgun, shouted, shouter, shunted, shunter, snorted, snouted, sounder, sterned, surgeon, tenders, tenured, tenures, thereon, thonged, thorned, throned, thrones, throngs, thunder, tongued, tongues, tonsure, toughen, tougher, troughs, trudgen, trudges, undergo, undoers, undrest, unhorse, unreset, unshoed, ushered