The word silvicultures 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: 24
Highest Scoring Words With Friends™ Play In The Letters silvicultures
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Seven Letter Word Alert: (48 words)
cellist, celsius, cluster, cruises, culture, culvert, cursive, elicits, illites, lucites, lusters, lustier, relists, results, retills, revisit, revuist, rillets, rivulet, rustics, rustles, rutiles, silicle, sillier, siltier, silvers, slicers, slivers, sluicer, sluices, stiller, stivers, stivier, strives, suiters, sullies, surveil, sutlers, sutures, tillers, trellis, utilise, uveitis, verists, virtues, viruses, vitelli, vulture