The word salaciousness 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: 19
Highest Scoring Words With Friends™ Play In The Letters salaciousness
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Seven Letter Word Alert: (52 words)
aeolian, aliases, assails, caisson, canulae, canulas, caseins, casinos, cassons, casuals, cauline, celosia, celsius, cession, classes, clauses, coalise, consuls, cosines, counsel, cousins, elusion, ensouls, insoles, inulase, lacunae, lassies, lassoes, lesions, lessons, lioness, oilcans, osseins, ossicle, sacless, salines, sealion, seasons, sensual, session, silanes, sinless, sinuses, sluices, socials, solaces, sonless, sunless, unclose, uncoils, unlaces, unseals