The word undersealed 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: 16
Highest Scoring Words With Friends™ Plays In The Letters undersealed
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Seven Letter Word Alert: (40 words)
asunder, danders, dandler, dandles, deadens, dealers, deleads, deluder, deludes, denuder, denudes, dresden, duelers, eluders, endears, endured, endures, enlards, ensured, ladders, landers, launder, leaders, leaners, learned, lenders, needers, needled, needler, needles, reddens, redeals, release, saddler, slander, sledder, slender, snarled, sneered, unreels