The word astrophysicists 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 astrophysicists
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Seven Letter Word Alert: (69 words)
airship, apricot, artists, assists, assorts, atrophy, captors, carhops, casspir, castors, chariot, charity, chassis, citator, copyist, costars, cytosis, haptics, haricot, harpist, history, isopach, opacity, ostrich, pachisi, pastors, patriot, physics, piarist, prosaic, protist, psychos, pyritic, racists, rapists, raspish, rattish, rhotics, ricotta, satiric, schists, scissor, scorias, scripts, shitpot, sophtas, spastic, spirits, starchy, statics, straits, styptic, taoists, tartish, thirsts, thirsty, throats, throaty, tipcart, tipcats, toparch, topiary, tricots, trophic, tropics, tropist, tsarist, typists, yttrias