The word discotheques 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: 28
Highest Scoring Words With Friends™ Play In The Letters discotheques
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Seven Letter Word Alert: (43 words)
cestode, cheques, chested, choused, chouses, coedits, coesite, cosiest, deceits, dehisce, diocese, dissect, ditches, docquet, douches, duchess, duchies, escudos, eudicot, heisted, hessite, hideous, hideout, hoisted, oecists, outsees, outside, quested, quiched, quiches, quiesce, quieted, quotees, scouted, seduces, shouted, studies, studios, techies, tedious, tissued, touched, touches