The word vocalisers 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 vocalisers
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Seven Letter Word Alert: (52 words)
airless, alcoves, calorie, carless, caviler, celosia, clavier, closers, clovers, coalers, coalier, coalise, cresols, eclairs, escolar, lassoer, lossier, oarless, oracles, ossicle, ovaries, reclass, recoals, recoils, resails, resoils, rosalic, sailers, sailors, salvers, saviors, scalers, scalier, scarves, scleras, scoriae, scorias, serials, servals, silvers, slavers, slicers, slivers, socials, solacer, solaces, solvers, varices, velaric, vesical, viscera, voicers