The word polyandrous 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: 20
Highest Scoring Words With Friends™ Play In The Letters polyandrous
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Seven Letter Word Alert: (24 words)
duopoly, laundry, nodular, noloads, onloads, pardons, polaron, poulard, poundal, prosody, proudly, pylorus, roundly, soprano, soundly, synodal, unloads, unplays, unsoapy, uplands, uploads, uropods, yaupons, youpons