The word contemptuous 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: 24
Highest Scoring Words With Friends™ Play In The Letters contemptuous
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Seven Letter Word Alert: (28 words)
compose, compost, compote, compute, consume, contest, copouts, costume, cottons, coupons, cutouts, mottoes, muscone, octopus, outcome, outmost, outpost, outputs, outspun, outstep, postmen, pounces, punctum, tenuous, teutons, topmost, tuneups, uncoops