The word wainscottings 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: 23
Highest Scoring Words With Friends™ Play In The Letters wainscottings
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Seven Letter Word Alert: (58 words)
actions, agnosic, agonist, anionic, anoints, atonics, atoning, awnings, caisson, canting, cantons, casings, casinos, casting, cations, catting, coating, coining, consign, consist, contain, cosigns, costing, cotwist, gnostic, iconist, incants, instant, intwist, nations, niacins, nicosia, nitwits, notists, octants, sitting, snowing, stannic, statics, stating, statins, station, stoning, stowing, taoists, tasting, tinting, titanic, tocsins, tossing, twining, waiting, wanting, wantons, wasting, wincing, witting, wonting