The word seismography 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 seismography
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Seven Letter Word Alert: (73 words)
amorphs, amorphy, aspires, egoisms, epigamy, epigram, gashers, gaspers, gaspier, gassier, geishas, geomaps, gophers, gossipy, grayish, greyish, gypsies, hampers, harpies, heroism, hoagies, homages, hosiers, hosiery, hygroma, imagers, imagery, imagoes, impasse, imposer, imposes, impress, isogram, isomers, magpies, marshes, mashers, messiah, mirages, mishaps, mishear, mispage, mispays, mossery, mossier, ogreish, ospreys, paresis, pessary, phrases, praises, premiss, primase, promise, pyemias, pygmies, raspish, reshims, reships, rosehip, seahogs, seraphs, shapers, sharpie, sherpas, shrimps, shrimpy, sighers, simpers, smasher, soapers, soapier, spireas