The word disclosure 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: 16
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (35 words)
celsius, ceroids, closers, closure, coursed, courses, cresols, crossed, cruised, cruises, curdles, dossier, dousers, escudos, lossier, lousier, ossicle, recoils, resoils, rodless, scolder, scoured, serious, sidlers, slicers, sliders, sluiced, sluicer, sluices, solders, soldier, sourced, sources, sucrose, sudsier