The word uncommunicative 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: 35
Highest Scoring Words With Friends™ Play In The Letters uncommunicative
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Seven Letter Word Alert: (49 words)
account, aconite, actinic, amentum, ammonic, ancient, anionic, auction, avionic, canonic, catenin, caution, cocaine, cometic, comment, commune, commute, concave, conceit, connect, connive, contain, convect, convent, convict, invoice, meconic, meiotic, mention, mimetic, miniate, minicam, minivan, montane, mountie, muonium, nematic, noncute, nonmate, nonmeat, nonmute, nouveau, oceanic, omentum, unction, unmeant, vaccine, vacuome, vitamin