The word ungainliness 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: 19
Highest Scoring Words With Friends™ Play In The Letters ungainliness
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Seven Letter Word Alert: (40 words)
aisling, aniline, asinine, ensigns, ensuing, genials, guanine, guineas, gunless, inlines, innings, insulin, inulase, inulins, issuing, leaning, leasing, lensing, liaises, ligases, lignins, linings, nailing, nannies, sailing, salines, sealing, sensing, sensual, siennas, signals, silanes, singles, sinning, sunnies, sunning, unagile, unalign, unseals, unsling