The word pathologists 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: 20
Highest Scoring Words With Friends™ Plays In The Letters
Seven Letter Word Alert: (27 words)
alights, altoist, apologs, galoots, gasohol, glottis, goatish, goosish, hotpots, hotspot, ooliths, ooplast, otolith, pistols, plights, postils, potshot, shitpot, slights, soloist, sophtas, spigots, spotlit, taoists, topsail, topsoil, tosspot