The word ameliorated 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: 16
Highest Scoring Words With Friends™ Play In The Letters ameliorated
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Seven Letter Word Alert: (57 words)
admiral, aerated, airdate, alamode, alarmed, alerted, altered, areolae, armload, dealate, delator, demerit, demerol, dilater, dilator, dimeter, diorama, domatia, earldom, earmold, emailed, emerald, emirate, etaerio, leotard, limeade, loamier, maleate, maltier, marital, marlite, martial, matador, mealier, meatier, mediate, merited, metaled, mitered, modeler, moldier, motlier, oatmeal, oldtime, radiate, readmit, redealt, related, remated, remodel, reoiled, retiled, retimed, telomer, tiaraed, trailed, treadle