The word necrolysis 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: 17
Highest Scoring Words With Friends™ Play In The Letters necrolysis
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Seven Letter Word Alert: (24 words)
censors, cession, clerisy, cloners, closers, cloyers, coiners, cornily, cosines, coyness, cresols, cronies, crossly, insoles, lesions, lioness, lossier, ossicle, recoils, recoins, resoils, seniors, sensory, slicers