The word perpetration 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 perpetration
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Seven Letter Word Alert: (70 words)
airport, appoint, arenite, attirer, entreat, epitope, etaerio, inepter, inerter, iterate, nattier, nitrate, operant, operate, ornater, otarine, painter, paperer, partner, patient, patriot, pattern, peatier, peptone, pertain, pettier, pioneer, pipette, pointer, portent, praetor, prenote, prepare, pretape, printer, pronate, propane, propene, propine, prorate, protean, protein, rapport, rattier, reinter, repaint, repaper, repiner, repoint, reprint, retrain, retreat, taperer, tearier, tentier, ternate, terpine, terrain, terrane, tiptoer, torrent, trainee, trainer, traitor, trapper, treater, treetop, triaene, tripper, triptan