The word astronautics 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: 17
Highest Scoring Words With Friends™ Play In The Letters astronautics
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Seven Letter Word Alert: (75 words)
actants, actions, arctans, artisan, artists, atonias, atonics, attains, auction, autists, autocar, caisson, cantors, cartons, casinos, castors, cations, caution, citator, citrons, consist, costars, cousins, cratons, cuatros, curtain, incrust, instars, intorts, intrust, nautica, nitrous, notists, octants, outcast, outrant, outsits, racists, rainout, rations, rattons, ricotta, rustics, sanctus, satanic, saurian, scorias, sonatas, statics, statins, station, strains, straint, straits, stratas, stratus, suction, suitors, sunstar, sustain, tantric, taoists, tartans, tocsins, toucans, tourist, transit, tricots, truants, tsarina, tsarist, uncarts, uncross, unsorts, unstoic