The word electroscopes 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: 23
Highest Scoring Words With Friends™ Play In The Letters electroscopes
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Seven Letter Word Alert: (76 words)
closers, closest, closets, coerces, colters, coolers, coolest, corpses, corsets, creoles, creosol, cresols, cresset, elector, elopers, escorts, loosest, looters, ocelots, osselet, ostlers, pectose, peelers, pelters, pesters, pestles, petless, petrels, petrols, poetess, poorest, poroses, posters, precool, prelect, presets, process, reclose, reelect, repeels, replete, replots, reposes, reposts, rescope, resects, resoles, respect, respelt, respool, respots, resteps, retools, roselet, scepter, sceptre, scooper, scooter, secrete, secrets, sectors, selects, sleeper, slopers, soccers, specter, spectre, spooler, steeper, steeple, stereos, sterols, stooper, toeless, toolers, topless