The word brackishness 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: 25
Highest Scoring Words With Friends™ Play In The Letters brackishness
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Seven Letter Word Alert: (67 words)
abscess, abscise, ancress, arcsine, arsenic, arshine, arshins, ascribe, backers, bankers, bashers, bearish, biasses, bickers, birches, bracken, braises, brasses, breakin, brisken, cankers, carbine, carnies, caseins, cashers, cashier, chainer, chaises, chasers, chassis, crashes, hackers, hankers, hankies, harkens, harness, hernias, hissers, inchers, inreach, kaisers, kashers, kinases, kissers, nickase, ranches, rebacks, rechain, rescans, ricksha, sackers, sassier, scabies, scribes, seasick, shakers, shakier, shiners, shrieks, shrikes, shrines, shrinks, sickens, sinkers, snakier, snakish, snicker