The word suppurative 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 suppurative
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Seven Letter Word Alert: (21 words)
apprise, auteurs, parties, pasteup, pastier, pasture, paupers, pirates, private, pupates, pursuit, revuist, sappier, tappers, tippers, traipse, upraise, uprates, upstair, veritas, virtues