The word spermicides 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: 21
Highest Scoring Words With Friends™ Play In The Letters spermicides
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Seven Letter Word Alert: (41 words)
cerises, crimped, crisped, decries, deicers, demirep, demises, depress, desires, despise, dimeric, diprism, empires, empiric, empress, epiderm, epimers, impedes, impress, mercies, messier, pierced, pierces, pissier, precise, premise, premiss, preside, pressed, recipes, resides, respice, screeds, scrimps, seismic, simpers, species, spermic, spicers, spicier, spiders