The word motionlessly 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: 20
Highest Scoring Words With Friends™ Plays In The Letters motionlessly
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Seven Letter Word Alert: (59 words)
emotion, enlists, etymons, illness, insoles, instyle, isonomy, isonyms, lentils, lesions, lintels, lioness, lionets, listens, loonies, loosely, loosens, loosest, lotions, messily, millets, mistell, mitoses, moisten, moistly, molests, moonlit, motions, motleys, myelins, myosins, noisome, nosiest, oleosin, oolites, osteons, silents, smileys, soloist, somites, somonis, soonest, sootily, stollen, stomies, stonily, stoolie, stylion, stylise, stymies, systole, tinsels, tollmen, tonsils, toolmen, toonies, toyless, tyloses, tylosis