The word simpletons 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: (42 words)
enlists, epsilon, imposes, insoles, insteps, leptons, lesions, limpest, limpets, lioness, lionets, listens, mispens, misstep, mitoses, moisten, molests, mopiest, nosiest, pimento, pinless, pistols, pistons, pitless, pleions, postils, postmen, silents, simples, somites, spinels, spinets, spinose, splines, splints, stepson, stomies, tinsels, tipless, tonsils, topless, topline