The word metempsychosis 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: 30
Highest Scoring Words With Friends™ Play In The Letters metempsychosis
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Seven Letter Word Alert: (71 words)
cephems, cesspit, chemist, chipset, chymist, coesite, commits, compete, copyist, cosiest, cosmism, cotypes, cytosis, ecotype, ectypes, emetics, empties, eophyte, epicyte, episome, epitome, eyepits, eyeshot, eyespot, heptose, hessite, homiest, hospice, hostess, imposes, isohyet, isotype, meioses, memetic, miscopy, misstep, mistype, mitoses, mopiest, mycoses, mycosis, myotics, mystics, oecists, pectose, physics, pitches, poesies, poetess, poetics, poetise, possets, potiche, psyches, psychos, schemes, schisms, schists, scythes, septics, sitcoms, society, somites, species, stepmom, stomies, stymies, symptom, systems, techies, theisms