The word misdemeaning 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 misdemeaning
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Seven Letter Word Alert: (43 words)
adenine, ammines, animism, aniseed, asinine, damming, damning, deeming, demeans, diamine, dimming, dingies, enamine, endgame, endings, engined, engines, enigmas, imagine, immense, indians, maidens, maiming, meanies, meaning, medians, menages, mending, minding, minimas, misdeem, mismade, misname, needing, sanding, sandmen, seaming, seeding, seeming, sending, sideman, smidgen, smidgin