The word greensward 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: 17
Highest Scoring Words With Friends™ Play In The Letters greensward
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Seven Letter Word Alert: (43 words)
angered, dangers, darners, derange, drawers, earners, endears, enraged, enrages, errands, ganders, gardens, garners, genders, gnarred, gnawers, graders, grander, greased, greaser, grenade, ragweed, rangers, readers, redrags, redrawn, redraws, regards, regears, regrade, renders, rereads, resawed, reswear, rewards, swearer, wagered, wagerer, wanders, wardens, warders, warners, wearers