The word ruptureworts 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 ruptureworts
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Seven Letter Word Alert: (39 words)
outputs, outstep, outwept, porters, posture, potters, pourers, pouters, presort, protest, pursuer, putters, reports, repours, retorts, retours, rotters, routers, rupture, spotter, spouter, spurrer, spurter, sputter, stewpot, stouter, terrors, torture, tourers, touters, trouper, troupes, trouser, truster, turrets, tutorer, twostep, uprouse, usurper