The word thoroughfares 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 thoroughfares
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Seven Letter Word Alert: (76 words)
arguers, arouser, authors, earshot, farther, fathers, ferrous, footage, footers, forager, forages, foregut, forgers, forgets, forgoer, forgoes, fourths, fraters, fraught, froster, frother, fuhrers, furoate, further, garrets, garters, gathers, grafter, graters, grouser, grouter, hafters, harsher, hearths, hoarser, hoofers, hurrahs, hurters, orators, outages, outgoes, outrage, outroar, outsoar, rafters, ragouts, regraft, regrout, reroast, reroofs, reroots, reshoot, retours, rhetors, roaster, roofers, rooster, rooters, rougher, routers, rugrats, shooter, shorter, shouter, soother, storage, sugarer, through, tougher, tourers, trasher, troughs, trouser, turgors, urethra, urostea