The word cortisones 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: 14
Highest Scoring Words With Friends™ Plays In The Letters cortisones
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Seven Letter Word Alert: (48 words)
censors, cession, cistern, citrons, coiners, consist, consort, cooties, cornets, coronet, corsets, cosiest, cosines, cretins, cronies, erosion, erotics, escorts, incests, insects, inserts, noosers, norites, nosiest, notices, oecists, oncosis, orients, osteons, recoins, rosiest, scooter, section, sectors, seniors, sinters, sooners, soonest, sootier, sorties, stoners, stonier, stories, tensors, tocsins, toonies, torsion, triones