The word weathercocks 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: 27
Highest Scoring Words With Friends™ Play In The Letters weathercocks
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Seven Letter Word Alert: (87 words)
accrete, acerose, cachers, cachets, catcher, catches, cerates, chaster, cheater, checker, chewers, chokers, coaches, coakers, coarcts, coaster, cockets, coerces, coheres, cracket, cracowe, creates, creches, crochet, cwtches, earshot, echoers, etchers, hackers, hawkers, heaters, hectare, heteros, hoecake, hotcake, octarch, rackets, reaches, reawoke, recache, recatch, recheat, recheck, rechews, rechose, recoats, recocks, reheats, reshake, restack, restake, restock, restoke, retacks, retakes, retches, reteach, rethaws, retweak, rewatch, roaches, rockets, roseate, scratch, screech, seacock, shocker, stacker, stocker, sweater, tackers, teacher, teaches, thwacks, torches, trochee, tweaker, watcher, watches, weakest, weather, whackos, whereas, whereat, whereto, wreathe, wreaths