The word trumpetfish 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™ Plays In The Letters trumpetfish
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Seven Letter Word Alert: (40 words)
firmest, fitters, fumiest, hermits, hirsute, hitters, humites, humpers, humpies, impetus, metrist, mushier, mustier, mutters, permits, pettish, presift, pushier, putters, puttier, putties, reshift, restump, shifter, shutter, spumier, sputter, stumper, surfeit, thrifts, thumper, tipster, tithers, triumph, trumpet, tufters, tuftier, umpires, upshift, uptimes