The word cutlassfishes 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: 23
Highest Scoring Words With Friends™ Play In The Letters cutlassfishes
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Seven Letter Word Alert: (71 words)
achiest, acutish, aitches, alethic, ascites, ashiest, ashless, assists, aulists, caseful, castile, castles, catfish, celsius, chaises, chalets, chassis, chisels, clashes, classes, clauses, cultish, cutleaf, elastic, ethical, falsest, fascist, faucets, felsics, fiestas, filches, fistula, fistule, flashes, flushes, fuchsia, halites, hassles, hateful, hatfuls, hatless, hisself, hussies, hustles, laciest, lassies, latches, lucites, lushest, sachets, sacless, salutes, satchel, scathes, schists, selfact, selfish, siestas, slashes, sleuths, sluices, slushes, stashes, stifles, sulcate, sulfate, sulfite, taluses, tassels, tissues, tussles