The word criminalising 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: 24
Highest Scoring Words With Friends™ Play In The Letters criminalising
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Seven Letter Word Alert: (34 words)
airings, aisling, alginic, arising, calming, craning, garlics, ingrain, lacings, lairing, lancing, lignins, limning, linings, mailing, maligns, margins, marlins, mincing, nailing, niacins, railing, raining, raising, ringman, rinsing, sailing, scaling, scaring, similar, slicing, sliming, smiling, snaring