The word nauseatingness 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: 20
Highest Scoring Words With Friends™ Play In The Letters nauseatingness
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Seven Letter Word Alert: (66 words)
against, agatine, agatise, anginas, antenna, antigen, assents, assigns, assuage, augites, aunties, easiest, engines, ensigns, ensuing, ensuite, gateaus, genesis, gentian, genuine, genuses, guanine, guesses, guineas, gussets, gussies, iguanas, ingests, intense, nannies, neatens, negates, nesting, sagiest, sassing, sateens, sausage, seating, seitans, seitens, senates, sensate, sensing, sestina, sestine, siennas, siestas, signees, signets, sinuate, sinuses, sunnies, sunning, sunsets, suntans, sustain, tanning, tannins, teasing, tensing, tissues, tunings, uneaten, unseats, unstage, unstain