The word inaccessibly 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: 25
Highest Scoring Words With Friends™ Plays In The Letters inaccessibly
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Seven Letter Word Alert: (30 words)
abscise, abseils, aclinic, albinic, alibies, bicycle, bylines, byssine, calcine, calyces, cancels, caseins, classic, clinics, cyanise, cyclane, cyclase, cyclins, cyclise, cynical, icicles, iciness, incises, laicise, lesbian, liaises, salines, scabies, silanes, silicas