The word defibrillate 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
Seven Letter Word Alert: (69 words)
airlift, alerted, altered, beadier, bedrail, belated, bellied, berated, bleated, bleater, brailed, braille, briefed, debater, debrief, defiler, deflate, deifier, deliria, dialler, dilater, draftee, driblet, edifier, febrile, federal, fertile, fibered, fibrate, fielder, filbert, fileted, filiate, firebed, firelit, flailed, flatbed, flirted, friable, frilled, illbred, labeled, labeler, leafier, leaflet, libated, libeled, libeler, liberal, literal, rallied, rebaled, rebated, rebited, redealt, refiled, reflate, reified, relabel, related, retiled, tallied, tallier, trailed, treadle, trebled, triable, trifled, trilled