The word disapproved 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: 23
Highest Scoring Words With Friends™ Plays In The Letters disapproved
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Seven Letter Word Alert: (39 words)
adipose, advised, adviser, advisor, apposed, apposer, apprise, approve, aspired, avoided, avoider, dappers, deodars, despair, devisor, diapers, dippers, dripped, dropped, epipods, ovaries, overdid, padders, paddies, peapods, periods, praised, prepaid, provide, radioed, roadies, sappier, savored, soapier, soddier, soppier, vapider, vapored, voiders