The word streetwalks 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: 19
Highest Scoring Words With Friends™ Play In The Letters streetwalks
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Seven Letter Word Alert: (64 words)
artless, aweless, earless, elaters, estates, kestrel, kettles, leakers, leasers, letters, rattles, realest, relates, resales, reseals, reseats, reskews, restake, restate, retakes, retasks, retaste, retests, retweak, rewalks, sealers, seaters, setters, settler, settles, skaters, skelter, skewers, slaters, stalest, stalker, starlet, startle, staters, stealer, streaks, streets, swatter, sweater, swelter, talkees, talkers, taskers, tasters, tealess, teasels, teasers, tersest, testers, trestle, tweaker, walkers, warless, wasters, wattles, weakest, weasels, wetters, wrestle