The word colonoscopies 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 colonoscopies
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Seven Letter Word Alert: (32 words)
cession, ciscoes, cocoons, colonic, colossi, concise, console, cosines, epsilon, icecool, insoles, lesions, lioness, loonies, loosens, oleosin, oncosis, ooscope, ossicle, pencils, piccolo, pinless, pleions, plosion, poisons, polices, sconces, spinels, spinose, splenic, splices, splines