The word disambiguates 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 disambiguates
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Seven Letter Word Alert: (62 words)
agatise, amassed, assuage, assumed, augites, bedsits, bedusts, besmuts, bestuds, biassed, budgets, budgies, busiest, daisies, damages, degauss, degusts, demasts, demists, diabase, digests, disgust, dumbest, gambits, gamiest, gateaus, gaudies, gussied, iambist, massage, medusas, megabat, megabit, midgets, misdate, misedit, missaid, misseat, missuit, misused, sagiest, satsuma, sausage, seabags, seamaid, sigmate, smudges, stadium, stigmas, stimied, stimies, studies, subedit, subitem, submaid, submits, subside, subsite, sudates, teabags, tediums, tissued