The word interacting 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 interacting
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Seven Letter Word Alert: (50 words)
ancient, antigen, cannier, canting, carting, catenin, cattier, catting, certain, citrate, citrine, cittern, craning, crating, earning, entrain, entrant, gentian, granite, igniter, inciter, inertia, ingrain, ingrate, nattier, nearing, netting, nictate, nitrate, nitrite, nittier, raining, ranting, ratting, regnant, reicing, reining, renting, tangent, tangier, tantric, tearing, tenting, tetanic, tiering, tinnier, tintier, tinting, titanic, tracing