The word bulletproofed 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: 26
Highest Scoring Words With Friends™ Plays In The Letters bulletproofed
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Seven Letter Word Alert: (58 words)
bedroll, bedropt, bedtool, blooper, blurted, boulder, deplore, doleful, doubler, doublet, doubter, droplet, dropout, dueller, erupted, feedlot, flooder, floored, floured, flouted, flouter, foldout, fuelled, fueller, lobelet, obtrude, odorful, optrode, outbled, outbred, outdoer, outplod, outpoll, outrode, petfood, plouter, pollute, poulter, prelude, proofed, purfled, redoubt, redpole, redpoll, reflood, refuted, reputed, rollout, telopod, toluole, torpedo, trebled, treeful, trolled, trollop, trooped, trouble, trouped