The word sandhoppers 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: 21
Highest Scoring Words With Friends™ Play In The Letters sandhoppers
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Seven Letter Word Alert: (51 words)
adhorns, appends, apposed, apposer, apposes, dappers, dashers, dehorns, hadrons, handers, happens, hardens, harness, headons, hoppers, nappers, operand, oppress, orphans, panders, pardons, parsons, peapods, perhaps, persona, persons, phrased, phrases, ponders, propane, reasons, resands, resnaps, respans, respond, sanders, sappers, seraphs, shaders, shapers, sharped, sharpen, sherpas, shopped, shopper, snapped, snapper, soapers, soppers, spaders, spreads