The word keratoscopy 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: 23
Highest Scoring Words With Friends™ Play In The Letters keratoscopy
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Seven Letter Word Alert: (38 words)
apocyte, captors, carpets, coakers, coaster, cookers, cookery, cotypes, coyotes, oocytes, packers, packets, partook, pockets, poorest, precast, precoat, precook, presoak, rackets, recoats, recooks, repacks, restack, restock, retacks, rockets, scooper, scooter, seaport, spectra, stacker, stocker, stooper, streaky, tackers, toecaps, yapocks