The word troublemaker 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: 24
Highest Scoring Words With Friends™ Play In The Letters troublemaker
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Seven Letter Word Alert: (43 words)
abortee, aborter, alerter, aureole, beamlet, beermat, bleaker, bleater, bloater, blurter, breaker, bromate, brumate, earlobe, emulate, erratum, laborer, leukoma, marbler, maturer, meerkat, mutable, outbake, outbark, rambler, realter, realtor, rebater, reblame, rebuker, relater, remaker, remoter, reroute, retaker, rubeola, rumbler, taboule, telomer, tremble, trouble, tumbler, uromere