The word creaminess 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 creaminess
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Seven Letter Word Alert: (44 words)
amerces, amnesic, ancress, arcsine, arsenic, careens, carmine, carnies, caseins, censers, cerises, cinemas, creases, encases, ensears, icemans, icemass, inseams, marines, meanies, menaces, mercies, messier, mincers, nemesis, racemes, racisms, recanes, remains, remines, renames, rescans, screams, screens, seamers, seamier, seances, secerns, seminar, seriema, siamese, siemens, sincere, sirname