The word incapacitates 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: 23
Highest Scoring Words With Friends™ Play In The Letters incapacitates
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Seven Letter Word Alert: (57 words)
acacias, acapnia, accents, accepts, accites, actants, actinic, anapest, anaptic, apatite, ascetic, aseptic, attains, canapes, canasta, cantata, capstan, captain, catnaps, catnips, icecaps, incites, inscape, inspect, instate, nictate, panacea, panties, patacas, patents, patient, patinae, patinas, patines, patties, peasant, peccant, pectins, pianist, picante, picnics, pietist, saccate, satanic, satiate, sceptic, sciatic, spicate, statice, stipite, tactics, tetanic, tictacs, tiepins, tiniest, tipcats, titanic