The word skullduggeries 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: 27
Highest Scoring Words With Friends™ Plays In The Letters skullduggeries
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Seven Letter Word Alert: (65 words)
deluges, desires, deskill, diesels, diggers, digress, druggie, duelers, dueller, duskier, eggless, egglike, eldress, eluders, gelders, gilders, girdles, gliders, grilled, grilles, grudges, guessed, guesser, guilder, gullied, gullies, gurgled, gurgles, gussied, kidless, killers, ledgers, legless, leisure, lidless, luggers, regilds, reglued, reglues, reguide, reissue, resells, resides, residue, reskill, ruglike, sedgier, sellers, sidlers, skelder, skilled, skirled, skulled, sledges, sliders, sludges, slugged, slugger, sudsier, sulkers, sulkier, sulkies, sullied, sullies, ukulele