The word hypnotiser 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 hypnotiser
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Seven Letter Word Alert: (38 words)
entropy, heroins, histone, history, honesty, hornets, hosiery, inshore, iphones, isohyet, isotype, norites, orients, phoneys, phonier, phonies, phrensy, pointer, postern, pothers, pronest, protein, pterins, pyrites, pyrones, pythons, repoint, ropiest, rosehip, shorten, stonier, stripey, strophe, thiones, thrones, triones, triynes, trypsin