The word endoplasms 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: 19
Highest Scoring Words With Friends™ Play In The Letters endoplasms
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Seven Letter Word Alert: (20 words)
aldoses, almonds, daemons, dampens, damsels, deposal, desmans, lassoed, madness, manless, mapless, napless, oldness, plasmon, pomades, psalmed, salmons, sampled, samples, spasmed