The word expropriation 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: 27
Highest Scoring Words With Friends™ Play In The Letters expropriation
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Seven Letter Word Alert: (38 words)
airpipe, airport, appoint, axinite, inertia, nippier, operant, oration, ornater, otarine, painter, partner, pertain, pointer, portion, praetor, prairie, printer, pronate, propane, propine, prorate, protean, protein, rainier, rapport, repaint, repoint, reprint, retrain, terrain, tippier, toprope, trainer, trapper, triaxon, tripper, trooper