The word vulcanisers 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
Seven Letter Word Alert: (71 words)
airless, ancress, arcsine, arsenic, auricle, carless, carnies, caseins, cauline, causers, caverns, caviler, celsius, clauses, clavier, cruises, curials, cursive, eclairs, incurve, insular, insures, inulase, lancers, nailers, nuclear, ravines, reclass, recusal, renails, resails, rescans, sailers, salines, salvers, saucers, saucier, scalers, scalier, scarves, scleras, secular, sensual, serials, servals, silanes, silvans, silvers, slavers, slicers, slivers, sluicer, sluices, snivels, sucrase, sunrise, surveil, unclear, unlaces, unravel, unseals, unveils, uricase, urinals, valuers, varices, velaric, vesical, viruses, viscera, visuals