The word acceptableness 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: 28
Highest Scoring Words With Friends™ Play In The Letters acceptableness
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Seven Letter Word Alert: (80 words)
ablates, absence, absents, accents, accepts, actable, alpeens, anapest, aptness, ascents, aspects, atlases, balance, baleens, basalts, beetles, canapes, cancels, cantles, capable, capless, caplets, capstan, caseate, castles, catnaps, cleanse, eatable, elapses, enables, encases, enclasp, enseals, escapee, escapes, essence, lactase, lancets, lateens, leanest, nabales, napless, nestles, netless, palaces, palates, paleate, pascals, pastels, peasant, peccant, pectens, pencase, pestles, petless, placate, planeta, planets, pleases, saccate, saltpan, sateens, scalene, sealant, seances, secants, seeable, selects, senates, sensate, spelean, spleens, stables, stances, staples, steepen, steeple, tealess, teasels, tenable