The word daredevilry 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: 20
Highest Scoring Words With Friends™ Play In The Letters daredevilry
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Seven Letter Word Alert: (32 words)
arrived, averred, deaired, delayed, delayer, deliver, derider, derived, deriver, deviled, devilry, dreader, earlier, lardier, layered, raveled, readied, readier, readily, redried, redrive, relayed, relayer, relived, revelry, reviled, reviler, rivaled, rivalry, rivered, yielded, yielder