The word guttersnipe 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: 18
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (70 words)
ensuite, entries, entrust, gesture, greisen, gunters, gustier, gutsier, gutters, inepter, integer, intrust, netters, neuters, nutsier, nutters, nuttier, peering, petites, pettier, petting, pingers, present, pretest, pterins, puniest, punster, punters, purines, pursing, putters, puttier, putties, putting, regents, reinput, repents, repines, respite, resting, retints, retunes, reunite, reusing, rusting, rutting, seeping, serpent, setting, sputter, stinger, stunter, stuping, tenters, tentier, tenures, terpine, testier, testing, tinters, tipster, treeing, trienes, trustee, turnips, uniters, unreset, unstrip, uprisen, uterine