The word membranophones 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: 30
Highest Scoring Words With Friends™ Play In The Letters membranophones
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Seven Letter Word Alert: (76 words)
amorphs, amperes, anemone, anomers, arsheen, bammers, banners, banshee, barhops, basemen, bemoans, besmear, boomers, boranes, boreens, enamors, enrobes, ensnare, hammers, hampers, harpoon, hasbeen, heapers, herbose, hombres, homomer, honoree, hormone, manners, maroons, members, menorah, mnemons, moaners, monomer, moorhen, moorpan, morphon, nanobes, nephron, nonamer, nonhero, nonpros, oarsmen, onshore, oosperm, openers, operons, orphans, penname, penners, persona, phoneme, phonons, poromas, prosoma, reheaps, rehomes, rehones, renames, reopens, repoman, reshape, ropeman, ropemen, searoom, shammer, shampoo, sharpen, shopman, shopmen, snooper, someone, soprano, spammer, spanner