The word supermolecule 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: 26
Highest Scoring Words With Friends™ Play In The Letters supermolecule
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Seven Letter Word Alert: (44 words)
cleomes, closeup, closure, clumper, compels, compere, coulees, coupler, couples, creoles, crumple, cupules, elopers, emulous, emulsor, leprous, locules, loculus, mollusc, mullers, osculum, peelers, plumose, presell, presume, pullers, pumelos, reclose, recluse, recoups, repeels, repolls, repulse, rescope, respell, ruesome, rumples, scruple, sleeper, smeller, speller, sporule, supreme, uprouse