The word thoroughbreds 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: 24
Highest Scoring Words With Friends™ Play In The Letters thoroughbreds
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Seven Letter Word Alert: (80 words)
bedrugs, boogers, boosted, booster, booters, borders, borough, bothers, brogues, brooder, brother, brought, brushed, brusher, budgers, budgets, burgers, debtors, deburrs, dehorts, detours, dorbugs, doubter, drought, druther, ghosted, goobers, gourdes, groused, grouser, grouted, grouter, herbous, hotbeds, hotdogs, hotrods, hurters, obtrude, obtuser, outbegs, outbred, outdoer, outdoes, outgoes, outrode, reboost, reboots, rebrush, reburst, redoubt, redroot, redrugs, regrout, reroots, reshoot, retours, rhetors, roosted, rooster, rooters, rosebud, roughed, rougher, routers, shooter, shorted, shorter, shouted, shouter, soothed, soother, stooged, strobed, through, tougher, tourers, troughs, trouser, trudges, turgors