The word exhibitionistic 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: 31
Highest Scoring Words With Friends™ Play In The Letters exhibitionistic
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Seven Letter Word Alert: (38 words)
benthic, benthos, biotech, biotest, biotics, biotins, biotite, bitcoin, boniest, botches, botnets, boxiest, coexist, cohibit, contest, context, coxitis, ebonics, eosinic, ethnics, exciton, exhibit, exotics, extinct, hexonic, histone, ichnite, iconist, inboxes, incites, inhibit, inosite, niobite, notches, notices, section, thiones, tiniest