The word eavesdropper 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 eavesdropper
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Seven Letter Word Alert: (61 words)
adorers, adverse, apposed, apposer, approve, averred, averser, dappers, deepsea, deposer, deprave, deserve, drapers, dropper, eardrop, evaders, oversea, oversee, papered, paperer, peapods, peepers, peevers, pervade, prepare, prosper, provers, rappers, readers, reapers, rearose, reavers, redrape, repaper, reparse, repaved, repaver, repaves, reposed, reposer, reprove, reraped, rerapes, rereads, resaved, reserve, respade, revered, reveres, reverse, savored, savorer, serovar, severed, severer, sparred, speared, spearer, speeder, vapored, vaporer