The word oversimplifies 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: 28
Highest Scoring Words With Friends™ Play In The Letters oversimplifies
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Seven Letter Word Alert: (85 words)
elopers, empires, empress, epimers, episome, erosive, filmier, filmise, firmoss, fissile, forelie, imperil, implies, implore, imposer, imposes, impress, improve, isomere, isomers, ivories, liriope, lispers, lossier, meioses, meiosis, messier, misfile, misfire, missile, morsels, mossier, oilfire, overlie, pieless, pilfers, pissier, plosive, plovers, poesies, prefile, prelims, premise, premiss, profess, profile, promise, refiles, refilms, reflies, reflips, reifies, reliefs, relives, removes, repiles, replies, reposes, resoils, resoles, resolve, reviles, revises, rimless, selfies, servile, silvers, similes, simpers, simpler, simples, slimier, slivers, slopers, smilers, smilier, soirees, solvers, spoiler, veilers, veilier, verismo, verisms, vermeil, vespers