The word blastomycosis 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: 25
Highest Scoring Words With Friends™ Play In The Letters blastomycosis
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Seven Letter Word Alert: (42 words)
atomics, bassist, biomass, blastic, blossom, bossily, cambist, cobalts, colossi, combats, cymbals, cystoma, cytomas, cytosis, cytosol, mascots, miscast, mislays, missals, missays, moistly, mosaics, mycosis, myotics, mystics, oboists, oocysts, osmosis, osmotic, sassily, scotoma, sitcoms, socials, soloist, somatic, sootily, stoical, symbiot, symbols, tabooli, tomboys, tylosis