The word sandgrouse 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: 15
Highest Scoring Words With Friends™ Play In The Letters sandgrouse
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Seven Letter Word Alert: (40 words)
aground, aroused, arouses, assured, asunder, dangers, degauss, desugar, dogears, dosages, dousers, dragons, engross, ganders, gardens, gaseous, gourdes, grassed, groaned, grossed, grounds, groused, grouses, guerdon, oranges, reasons, resands, resound, sanders, seadogs, snudges, sodgers, sounder, sugared, sundaes, sundogs, surgeon, undergo, undoers, undress