The word gasteromycete 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
Seven Letter Word Alert: (61 words)
acerose, amerces, cargoes, cattery, cerates, coaster, corsage, costate, cottage, cotters, creates, cremate, cystoma, cytomas, emerges, emoters, eyesore, gametes, garotte, gearset, geostat, gestate, goatees, grayest, greyest, gyrates, maestro, mastery, matters, meeters, meteors, octamer, racemes, recoats, remates, remeets, remotes, restage, restate, retaste, reteams, retoast, roseate, rosette, rotates, scatter, screamy, seagoer, secrete, smatter, steamer, stomate, storage, streamy, targets, teemers, teeters, testacy, toaster, tomcats, tyromas