The word cunnilinguses 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™ Plays In The Letters cunnilinguses
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Seven Letter Word Alert: (30 words)
ceiling, celsius, cuisine, cunning, cussing, ensigns, ensuing, gunless, iciness, incises, incline, inlines, innings, insulin, inulins, issuing, lensing, lignins, linings, nucleus, sensing, singles, sinning, slicing, sluices, sunnies, sunning, uncling, unsling, unslung