The word repulsiveness 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: 23
Highest Scoring Words With Friends™ Play In The Letters
Seven Letter Word Alert: (79 words)
elevens, elusive, ensures, enviers, evulses, insures, inverse, issuers, leisure, lessees, lessens, lineups, lispers, lupines, peelers, peevers, penises, pensive, peruses, pieless, pinless, plusses, presses, prevues, puerile, pulsers, punless, purines, purlins, pussier, pussies, reissue, relieve, relines, relives, repeels, repiles, repines, replies, repulse, respins, revenue, reviles, revises, revulse, seepier, servile, sessile, silvers, sinless, sinuses, sleeper, sleeves, slivers, snipers, snivels, spinels, spinule, spleens, splines, sunless, sunrise, surveil, suspire, unreels, unreeve, unveils, uprisen, uprises, useless, veilers, veinule, veneers, venules, versine, vespers, vessels, viruses, vulpine