The word transacting 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: 18
Highest Scoring Words With Friends™ Play In The Letters transacting
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Seven Letter Word Alert: (34 words)
actants, against, agarics, anginas, arctans, artisan, attains, canting, carting, casting, catting, craning, crating, gastric, gastrin, incants, instant, ranting, ratings, ratting, sangria, satanic, scaring, snaring, stannic, staring, stating, straint, tantric, tartans, tasting, tracing, transit, tsarina