The word suggestibility 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: 25
Highest Scoring Words With Friends™ Play In The Letters suggestibility
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Seven Letter Word Alert: (29 words)
biggest, bitsets, buggies, busiest, bustles, butties, elitist, giblets, gluiest, gustily, gutless, ileitis, lutists, lutites, stylets, stylise, stylist, sublets, sublist, subsite, subtest, suggest, testily, tissuey, tubless, tugless, ugliest, utilise, utility