The word unexpectedness 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: 31
Highest Scoring Words With Friends™ Play In The Letters unexpectedness
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Seven Letter Word Alert: (37 words)
decenes, deepcut, deepens, deepest, densest, deputes, descent, desexes, detunes, essence, exceeds, excepts, excused, excuses, execute, expects, expends, expense, expunct, exsects, extends, nutseed, pectens, pendent, pentene, scented, secedes, seduces, steeped, steepen, stunned, suspect, suspend, teepees, undents, unsexed, unspent