The word lethargically 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: 25
Highest Scoring Words With Friends™ Play In The Letters lethargically
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Seven Letter Word Alert: (64 words)
acatery, achiral, acylate, agilely, aircell, alertly, alethic, allayer, allelic, allergy, alright, archeal, archlet, article, arylate, cartage, charily, charity, chiller, clarity, clayier, clearly, cyathia, earthly, ethical, gallate, gallery, glacial, glacier, glitchy, gracile, greatly, helical, hellcat, hyalite, icetray, illegal, irately, lacteal, largely, lateral, lathery, legally, lighter, lightly, literal, lithely, lyrical, reality, rechill, recital, regalia, regally, relight, retally, rightly, tallier, tearily, thrilly, tillage, trachea, treacly, yachter, yachtie