The word dollarfishes 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™ Plays In The Letters dollarfishes
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Seven Letter Word Alert: (79 words)
aidless, airhole, airless, aldoses, dashers, derails, dialers, dialler, dollars, dollies, dorsals, dossier, fallers, fardels, fedoras, fillers, fishers, flailed, flashed, flasher, flashes, florals, flossed, folders, follies, frilled, hairdos, halides, heralds, hisself, holders, hollers, hollies, hosiers, isohels, lashers, lassoed, lassoer, lidless, loaders, loafers, lossier, oarfish, oarless, ordeals, rallied, rallies, redfish, redials, refills, reflash, refolds, rellish, reloads, resails, resoils, roadies, rodfish, rodless, sailers, sailors, selfish, serials, shaders, shadier, shalier, sherifs, shields, shilled, shoaled, shofars, shrills, sidlers, slashed, slasher, sliders, sloshed, solders, soldier