The word geophysicist 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
Seven Letter Word Alert: (28 words)
cesspit, chipset, copyist, cosiest, cotypes, cytosis, egoists, gipsies, gossipy, gothics, gypsies, hogties, hospice, isohyet, isotype, oecists, physics, pitches, poetics, potiche, psyches, psychos, scythes, septics, society, spigots, stogeys, stogies