The word butadienes 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 butadienes
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Seven Letter Word Alert: (30 words)
aniseed, auditee, aunties, bandits, beanies, betides, butanes, butenes, debates, destain, destine, detains, detinue, detubes, detunes, dunites, dustbin, enbused, ensuite, instead, nutseed, sainted, sauteed, sinuate, stained, standee, subedit, subtend, unbaits, unsated