The word exhilaration 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 exhilaration
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Seven Letter Word Alert: (35 words)
aeolian, aileron, airhole, airline, another, anthrax, axinite, elation, enthral, ethanol, exilian, hairnet, hernial, hotline, inertia, inhaler, inherit, latrine, laxator, lintier, loather, otarine, oxalate, oxheart, rainhat, rathole, ratline, relaxin, reliant, retinal, retinol, toenail, trenail, triaxle, triaxon