The word bullfightings 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: 29
Highest Scoring Words With Friends™ Play In The Letters bullfightings
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Seven Letter Word Alert: (40 words)
biggish, bilging, billing, bitings, blights, bugling, bulging, bulling, bullish, bushing, busting, filings, filling, fishing, flights, fluting, gifting, gushing, gusting, hulling, husting, infills, insight, instill, lifting, lilting, listful, listing, lubfish, lusting, sibling, sifting, sighing, silting, suiting, tilings, tilling, tinfuls, tubings, unfills