The word pinnatisect 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: 19
Highest Scoring Words With Friends™ Play In The Letters pinnatisect
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Seven Letter Word Alert: (39 words)
ancient, aseptic, asinine, canines, catenin, catnips, incants, incites, inscape, inspect, instant, instate, intents, nascent, niacins, nictate, panties, patents, patient, patines, patties, pectins, pianist, picante, pietist, pinnate, spicate, spinnet, stannic, statice, stipite, tannest, tenants, tenpins, tetanic, tiepins, tiniest, tipcats, titanic