The word counterfeiter 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 counterfeiter
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Seven Letter Word Alert: (58 words)
cittern, confute, conifer, cornett, cornier, coterie, counter, courier, critter, crofter, curette, current, enforce, enterer, enteric, enticer, erecter, erector, ferrite, fiercer, fortune, fretter, fritter, functor, inerter, nuttier, oftener, outfire, reciter, recount, recruit, reefier, reenter, reerect, refence, refiner, refuter, reincur, reinter, reroute, retiree, reunite, reutter, routine, runtier, ruttier, teenier, tentier, torrent, torture, trounce, tuftier, turfier, tutoree, tutorer, unerect, uterine, utterer