The word motionless 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: 15
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (32 words)
emotion, enlists, insoles, lesions, lioness, lionets, listens, loonies, loosens, loosest, lotions, mitoses, moisten, molests, moonlit, motions, noisome, nosiest, oleosin, oolites, osteons, silents, soloist, somites, somonis, soonest, stomies, stoolie, tinsels, tonsils, toolmen, toonies