The word extinguishers 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 extinguishers
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Seven Letter Word Alert: (92 words)
eighter, ensuite, ensures, enthuse, entries, exigent, exiting, genesis, genuses, gesture, greisen, guesser, gunters, gushers, gushier, gustier, gutsier, heiress, hessite, hirsute, hissier, hissing, hungers, hunters, hurting, husting, igniter, ignites, ingests, ingress, inherit, inserts, insight, insures, integer, issuing, neither, nesters, neuters, nightie, nutsier, regents, rehinge, reissue, renests, resents, reshine, resight, resigns, resting, retunes, reunite, reusing, risings, rushing, rusting, seitens, sestine, sexiest, shiners, shinier, shrines, shunter, shutins, sighers, sighter, signees, signers, signets, singers, sinters, sixguns, sixteen, sixties, stinger, strings, suiters, suiting, sunrise, tenures, therein, tiering, tigress, tigrish, treeing, trienes, uniters, unities, unreset, unrests, uterine, xeruses