The word stormproofer 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: 21
Highest Scoring Words With Friends™ Plays In The Letters stormproofer
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Seven Letter Word Alert: (31 words)
footers, formers, froster, oosperm, oospore, perform, poofers, poorest, porters, preform, presort, promote, proofer, reforms, reports, reproof, reroofs, reroots, rompers, roofers, rooftop, roomers, rooster, rooters, spoofer, stomper, stooper, terrors, torpors, tremors, trooper