The word shareholders 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: 18
Highest Scoring Words With Friends™ Play In The Letters shareholders
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Seven Letter Word Alert: (69 words)
adherer, adheres, adorers, aldoses, areoles, dashers, dealers, deashes, dorsals, dresser, earless, eldress, elodeas, erasers, harsher, headers, healder, healers, hearers, hearsed, hearses, heralds, herders, herdess, hoarder, hoarser, holders, larders, lashers, lassoed, lassoer, leaders, leasers, leashed, leashes, loaders, oarless, ordeals, rashers, readers, realers, rearose, redeals, redress, reheard, rehears, reloads, rereads, resales, reseals, reshare, reshoed, reshoes, reshore, resoled, resoles, rodless, sealers, shaders, sharers, sheared, shearer, shoaled, slashed, slasher, sloshed, soarers, solders, sorrels