The word crabbedness 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: 22
Highest Scoring Words With Friends™ Play In The Letters crabbedness
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Seven Letter Word Alert: (43 words)
absence, ancress, ascends, badness, bedares, bedress, benders, brassed, carbeen, carbene, careens, censers, crabbed, creased, creases, dabbers, dancers, debaser, debases, decanes, decarbs, decares, encased, encases, endears, ensears, rebased, rebases, recaned, recanes, redness, resands, rescans, resends, sabered, sanders, scabbed, screeds, screens, seabeds, seances, secerns, senders