The word coagulators 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 coagulators
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Seven Letter Word Alert: (20 words)
actuals, arousal, austral, autocar, catalog, coaltar, coastal, colours, cougars, crustal, cuatros, galoots, locator, logouts, oculars, oscular, outsoar, ragouts, saguaro, scrotal