The word adulteresses 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: 15
Highest Scoring Words With Friends™ Play In The Letters adulteresses
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Seven Letter Word Alert: (83 words)
alerted, altered, artless, asserts, assured, assures, auletes, austere, dealers, dearest, deerlet, delates, deleter, deletes, desalts, deserts, dessert, dresses, duelers, dusters, earless, elaters, eldress, eluated, eluates, eluders, estrual, euaster, eustele, leaders, leasers, lessees, lusters, realest, reasted, redates, redeals, redealt, reested, related, relates, release, resales, reseals, reseats, reseeds, results, russets, rustled, rustles, saluted, saluter, salutes, sauteed, sealers, seaters, sedater, sedates, seeders, slaters, sleeted, stealer, steeled, steered, strudel, sudates, sudsers, sutlers, taluses, tasered, tassels, tealess, teasels, teasers, treadle, tressed, tresses, trussed, trusses, tussled, tussles, ureases, useless