The word cryptologists 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 cryptologists
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Seven Letter Word Alert: (43 words)
colossi, copilot, copyist, crisply, crossly, cytosis, cytosol, glottis, glyptic, gossipy, gristly, grossly, grottos, lyrists, oocysts, otocyst, pistols, porosis, porotic, portico, postils, prologs, prootic, protist, pyloric, risotto, scorpio, scripts, soloist, sootily, spigots, spotlit, stylist, stylops, styptic, topsoil, tosspot, tricots, trilogy, tropics, tropist, tylosis, typists