The word perpetuating 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: 22
Highest Scoring Words With Friends™ Play In The Letters perpetuating
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Seven Letter Word Alert: (56 words)
arenite, entreat, epurate, gaunter, granite, grantee, greaten, inepter, ingrate, integer, iterate, nattier, nitrate, nuttier, painter, parting, patient, pattern, patting, peatier, peeping, peering, pertain, pettier, petting, petunia, pipette, prating, pretape, puritan, puttier, putting, rapping, ratting, reagent, reaping, reinput, repaint, reunite, rutting, tangier, tapping, taunter, tauting, tearing, tentage, tentier, ternate, terpine, trainee, treeing, triaene, triptan, uneager, urinate, uterine