The word outscored 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: 14
Highest Scoring Words With Friends™ Play In The Letters outscored
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Seven Letter Word Alert: (21 words)
coursed, courted, crudest, crusted, decrust, detours, doctors, ductors, ecotour, eductor, outdoer, outdoes, outrode, reducts, roosted, scooted, scooter, scoured, scouted, scouter, sourced