The word disassemble 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: 19
Highest Scoring Words With Friends™ Play In The Letters disassemble
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Seven Letter Word Alert: (43 words)
abseils, aediles, aidless, aimless, bedlams, bedless, beldame, beldams, bemedal, besides, beslime, biassed, biasses, blessed, blesses, blissed, blisses, damsels, debases, delimbs, delimes, demises, deslime, diesels, disable, disease, dismals, edibles, emailed, embased, embases, lassies, limeade, measles, misdeal, mislead, missals, sadisms, seabeds, seaside, sesames, sessile, siamese