The word soldierfishes 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: 20
Highest Scoring Words With Friends™ Play In The Letters soldierfishes
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Seven Letter Word Alert: (77 words)
defiers, defiler, defiles, deflesh, deifier, deifies, desires, diesels, doilies, dossier, dresses, edifier, edifies, eldress, fielder, fishers, fishier, fissile, fleshed, fleshes, flossed, flosses, folders, forelie, fossils, heifers, heiress, herdess, heroise, herself, hisself, hissers, hissier, hissies, holders, hosiers, idolise, iodiser, iodises, isohels, lessors, lossier, oilfire, oilfish, oilseed, redfish, refiled, refiles, reflies, refolds, rehides, reified, reifies, reliefs, reoiled, reshoed, reshoes, resides, resoils, resoled, resoles, rodfish, rodless, selfies, selfish, sessile, sherifs, shields, sidlers, sissier, sliders, sloshed, sloshes, sodless, soirees, solders, soldier