The word environmental 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 environmental
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Seven Letter Word Alert: (92 words)
aileron, ailment, aliment, almoner, anemone, antlion, arenite, elation, elative, eminent, emirate, emotive, enamine, enliven, enolate, enteral, entrain, envenom, environ, etaerio, eternal, intoner, ironman, lantern, latrine, lenient, lineate, lineman, linemen, loamier, maltier, manlier, marlite, matinee, mealier, meatier, melanin, mention, minaret, mineral, montane, moraine, motlier, neonate, netmail, nitrene, nominal, nominee, nonamer, nonevil, nonlate, nonliar, nonmail, nonmale, nonmate, nonmeal, nonmeat, nonreal, onetime, onliner, otarine, overate, overeat, overlie, overlit, overman, raiment, ratline, reliant, remnant, removal, retinal, retinol, romaine, telomer, toenail, tonearm, trainee, trenail, triaene, varmint, veinlet, velamen, veneral, ventral, vermeil, veteran, vinelet, vintner, violate, violent, vomiter