The word megalomanias 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: 22
Highest Scoring Words With Friends™ Plays In The Letters megalomanias
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Seven Letter Word Alert: (47 words)
aeolian, agnosia, agonies, agonise, agonism, amalgam, ammines, ammonia, amnesia, anaemia, analogs, angioma, animals, animose, eloigns, enigmas, galenas, geminal, genials, gliomas, gmelina, goalies, imagoes, laminae, laminas, lasagna, lasagne, leasing, legions, lemming, lingoes, mailman, mailmen, malaise, maligns, manages, mangles, mangoes, miasmal, mingles, misname, sangoma, sealing, sealion, seaming, semilog, seminal