The word stridulate 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: 13
Highest Scoring Words With Friends™ Play In The Letters stridulate
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Seven Letter Word Alert: (63 words)
aridest, artiest, astride, astuter, attired, attires, derails, details, dialers, dilater, dilates, diluter, dilutes, disrate, dualise, dualist, duelist, dustier, estrual, iratest, latites, litters, lustier, lutites, rattled, rattles, realist, reaudit, redials, retails, retilts, rituals, rudites, rustled, rutiles, saltier, saluted, saluter, situate, slatier, slatted, slitted, slitter, starlet, starlit, started, startle, statued, stature, stilted, stilter, striate, strudel, studier, tastier, tertial, tilters, tirades, titular, trailed, trusted, turtles, uralite