The word osteopathist 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: 17
Highest Scoring Words With Friends™ Plays In The Letters osteopathist
:
Seven Letter Word Alert: (25 words)
ashiest, atheist, attests, hotpots, hotspot, hottest, isotope, opiates, pasties, patties, pettish, potshot, potties, shitpot, soothes, sophtas, statist, taoists, tattoos, teapots, teashop, theists, tiptoes, tootsie, tosspot