The word confessional 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: 21
Highest Scoring Words With Friends™ Play In The Letters confessional
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Seven Letter Word Alert: (45 words)
caisson, canines, cannoli, cannolo, caseins, casinos, cassoon, celosia, cession, coalise, colossi, confess, confine, console, cosines, falcons, fancies, felsics, fiances, finales, finance, finless, insoles, ionones, lesions, lioness, loonies, loosens, noncola, nonlife, nonsale, nonself, noseans, oilcans, olefins, oleosin, oncosis, ossicle, salines, saloons, sealion, siennas, silanes, socials, solaces