The word computations 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: 23
Highest Scoring Words With Friends™ Play In The Letters computations
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Seven Letter Word Alert: (59 words)
acomous, actions, amounts, atomics, atonics, auction, campion, campout, caption, cations, catmint, catnips, caution, compost, copious, copouts, cottons, coupons, impacts, impasto, masonic, motions, mutants, octants, octopus, ominous, options, osmotic, ottoman, outcast, outmans, outmost, outpost, outspan, outspin, postman, potamic, potions, sanctum, scotoma, somatic, spinout, station, suction, tampons, tinpots, tipcats, tipmost, tomatos, tomcats, topcoat, topmast, topmost, toucans, tsunami, uncoops, unstoic, utopian, utopias