The word undeservedly 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 undeservedly
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Seven Letter Word Alert: (35 words)
deluder, deludes, delvers, densely, denuder, denudes, deserve, dresden, duelers, elevens, eluders, endured, endures, ensured, evulsed, lenders, levered, needers, needled, needler, needles, reddens, redeyes, reveled, revenue, revulse, severed, sledder, sleeved, slender, sneered, unreels, unreeve, veneers, venules