The word disaffirmations 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: 26
Highest Scoring Words With Friends™ Play In The Letters disaffirmations
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Seven Letter Word Alert: (74 words)
affairs, affiant, affirms, affords, affront, airmass, amritas, animist, artisan, artsman, astroid, atonias, diarist, diatoms, diorama, diosmin, disarms, domains, domatia, donairs, dormant, farmost, firmoss, fission, forints, formats, indraft, informs, inroads, insofar, instars, iodisms, mantras, marinas, martian, martini, martins, mastiff, mastoid, matador, matrons, midairs, midriff, misfits, missaid, mission, missort, mitosis, mordant, nimrods, oarsman, ordains, radians, radiant, raisins, randoms, ransoms, rations, roadman, safaris, saffron, simians, sinoids, soffits, sonatas, stamina, stardom, strains, strands, stroams, tariffs, trifids, tsarina, tsarism