The word thermolabile 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: 22
Highest Scoring Words With Friends™ Plays In The Letters thermolabile
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Seven Letter Word Alert: (56 words)
abortee, airhole, alltime, armhole, balmier, beamlet, beermat, bimetal, blather, bleater, blether, blither, bloater, braille, breathe, bromate, bromite, brothel, earlobe, embroil, emirate, etaerio, herblet, labeler, leather, libator, libeler, liberal, literal, loamier, loather, lobelet, lobelia, maltier, marlite, mealier, meatier, motlier, orbital, rathole, reallot, rebathe, reblame, relabel, tallier, telomer, theorem, thermal, thimble, thrombi, timbale, timbrel, tramell, tremble, triable, trilobe