The word semiautomatics 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: 24
Highest Scoring Words With Friends™ Play In The Letters semiautomatics
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Seven Letter Word Alert: (77 words)
actuate, acuates, acutest, ascites, atomics, atomise, atomism, autists, automat, caeomas, caesium, cesiums, commits, commute, cosiest, cosmism, costate, costume, customs, icemass, imitate, mascots, meiosis, meiotic, miasmas, miasmic, mimesis, mimetic, mimosas, misaims, miscast, miscite, miscues, miscuts, mismate, misseat, missuit, mistime, mitiest, mitoses, mitosis, mitotic, mosaics, mucosae, mucosas, mutates, oecists, osmiums, outcast, outmate, outsets, outsits, satiate, satsuma, scatoma, seamost, seismic, sitcoms, situate, somatic, somites, somitic, statice, statics, statism, statues, stimies, stomata, stomate, stomies, summate, summits, taoists, timeout, titmice, tomcats, utmosts