The word misleaders 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: 15
Highest Scoring Words With Friends™ Plays In The Letters misleaders
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Seven Letter Word Alert: (58 words)
admires, aediles, aidless, aimless, airless, armless, damsels, dealers, dearies, delimes, demises, derails, desires, deslime, dialers, diesels, disarms, disease, dismals, earless, eldress, emailed, emerald, leaders, leasers, limeade, mailers, mealier, measles, messier, misdeal, mislead, misread, readies, readmes, realise, realism, redeals, redials, remails, resails, resales, reseals, resides, rimless, sailers, sealers, seamers, seamier, seaside, serials, seriema, siamese, sidearm, sidlers, sliders, smeared, smilers