The word curableness 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™ Play In The Letters curableness
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Seven Letter Word Alert: (81 words)
absence, abusers, ancress, baleens, because, becurls, blesser, braless, cablers, carbeen, carbene, careens, carless, causers, censers, censure, cereals, clauses, cleaner, cleanse, creases, crubeen, cubanes, cubless, curable, earless, enabler, enables, enbuses, encases, enseals, ensears, ensures, euclase, lancers, leaners, leasers, nebulae, nebular, nebulas, nuclear, rebales, rebases, rebless, recanes, reclass, reclean, recluse, recusal, recuses, relaces, resales, rescale, rescans, rescues, reseals, resnubs, saucers, scalene, scalers, sclerae, scleras, screens, sealers, seances, secerns, secular, secures, sensual, subcase, subrace, sucrase, unbales, unbless, unbrace, unclear, unlaces, unreels, unseals, ureases, useable