The word hermetically 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™ Plays In The Letters hermetically
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Seven Letter Word Alert: (78 words)
aircell, alchemy, alertly, alethic, alltime, archlet, article, charily, charity, cheater, cheerly, chelate, chiller, chimera, chimere, claimer, clarity, clayier, clearly, climate, cremate, earthly, ecthyma, emacity, emirate, erectly, etheric, ethical, hectare, helical, hellcat, heretic, hyalite, icetray, irately, lathery, laytime, leacher, leather, lechery, literal, lithely, lyrical, machete, maltier, marlite, matcher, mealier, meatier, meatily, metical, micella, micelle, miracle, mycelia, mycetal, reality, recheat, rechill, rechime, recital, reclaim, rematch, retally, reteach, tallier, teacher, tearily, thermal, thermic, thrilly, thymier, tramell, treacle, treacly, yachter, yachtie, yealmer