The word repercussed 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: 19
Highest Scoring Words With Friends™ Plays In The Letters repercussed
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Seven Letter Word Alert: (44 words)
creeped, creeper, cursers, decreer, decrees, depress, dresser, dressup, percuss, perused, peruses, precede, pressed, presser, pursers, recedes, recured, recures, recurse, recused, recuses, redress, reducer, reduces, repress, rescued, rescuer, rescues, reseeds, screeds, seceder, secedes, secured, securer, secures, seducer, seduces, seeders, speeder, spruced, sprucer, spruces, spurred, supered