The word cryptanalytic 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 cryptanalytic
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Seven Letter Word Alert: (33 words)
acrylic, airplay, alicant, anaptic, caltrap, cantrap, cantrip, capital, captain, carinal, cattail, cattily, clarity, claypan, clipart, cranial, cryptic, cynical, nattily, partial, patrial, plantar, playact, pliancy, practic, ptyalin, rattail, tacitly, tantric, tartpan, tipcart, triptan, typical