The word heavenwards 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: 22
Highest Scoring Words With Friends™ Play In The Letters heavenwards
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Seven Letter Word Alert: (34 words)
adheres, adverse, arsheen, ashweed, awardee, dharnas, dwarven, dwarves, endears, evaders, handers, handsaw, handsew, hardens, headers, hearsed, heavens, heavers, resaved, resawed, reshave, seaward, sheared, sheaved, swerved, veranda, wanders, wardens, warhead, wavered, weasand, weavers, wharves, whereas