The word northwesters 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: 18
Highest Scoring Words With Friends™ Plays In The Letters northwesters
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Seven Letter Word Alert: (61 words)
estrone, heteros, hornets, hotness, nesters, netters, norther, nowhere, rehones, renests, renters, rerents, resents, reshoes, reshore, reshown, reshows, resorts, resters, restore, reswore, retests, rethrow, retorts, rewrote, rhetors, rosette, rosters, rotters, setters, shorten, shorter, showers, snorers, snorter, snotter, sorters, stenose, stereos, sterner, stetson, stoners, streets, tensest, tensors, tenters, tersest, testers, tethers, thereon, thereto, thrones, thrower, torrent, western, wetness, wetters, whereon, whereto, worsens, wrester