The word antipruritics 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 antipruritics
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Seven Letter Word Alert: (31 words)
aspirin, cantrip, catnips, currant, curtain, incrust, intrust, intuits, pianist, piarist, puritan, satiric, startup, stirrup, straint, suntrap, tantric, tipcart, tipcats, titanic, transit, triptan, truants, turnips, uncarts, unpairs, unstrap, unstrip, untraps, upstair, upstart