The word inaccessibility 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 inaccessibility
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Seven Letter Word Alert: (95 words)
ability, abscise, abseils, absents, accents, accites, acetyls, aclinic, actinic, albinic, albites, albitic, alibies, ascents, ascetic, ascites, astilbe, beastly, bicycle, bisects, blastic, bylines, byssine, cabinet, calcine, calcite, calyces, cancels, cantles, caseins, castile, castles, ciliate, citable, classic, clastic, clients, clinics, clitics, cyanise, cyanite, cyclane, cyclase, cyclins, cyclise, cyclist, cynical, cystine, ecstasy, elastic, elastin, elicits, encysts, enlists, entails, icicles, iciness, ileitis, incests, incises, incites, initial, insects, instyle, italics, laciest, laicise, lancets, latency, lesbian, liaises, libates, listens, lysates, nailset, nastily, saintly, salient, salines, scabies, scantly, sciatic, secants, seitans, sestina, silanes, silents, silicas, silicic, stables, stances, stencil, stylise, tenably, tinsels