The word microphones 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 microphones
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Seven Letter Word Alert: (63 words)
chomper, chooser, chorion, chromes, ciphers, coheirs, coiners, compose, copiers, crimson, crispen, cronies, erosion, hencoop, heroics, heroins, heroism, hormone, hospice, imposer, inchers, incomer, incomes, inshore, ionomer, iphones, microns, mincers, moocher, mooches, moorhen, moorish, moronic, morphic, morphon, noisome, omicron, onshore, oosperm, operons, phonics, phonier, phonies, phrenic, pincers, pincher, pinches, ponchos, pooches, porches, porcine, princes, promise, recoins, rosehip, scooper, scorpio, shipmen, shopmen, snooper, spermic, sphenic, spheric