The word spirochetes 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: 19
Highest Scoring Words With Friends™ Plays In The Letters spirochetes
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Seven Letter Word Alert: (99 words)
cerises, cesspit, cheerio, chipset, ciphers, cithers, coesite, coheirs, coheres, copiers, corpses, corsets, cosiest, coterie, cresset, echoers, erotics, erotise, escorts, etchers, etheric, heiress, heptose, heretic, heroics, heroise, hessite, heteros, hosiers, hospice, oecists, ostrich, pectose, perches, persist, pesters, pierces, pitcher, pitches, poesies, poetess, poetics, poetise, porches, posters, pothers, potiche, precise, presets, priests, process, receipt, rechose, recipes, recites, repitch, reposes, reposts, rescope, resects, reships, reshoes, respect, respice, respite, respots, resteps, retches, rhotics, richest, ropiest, rosehip, rosiest, scepter, sceptre, scripts, secrets, sectors, septics, soirees, sorties, species, specter, spectre, spheres, spheric, spicers, spriest, sprites, stereos, stories, stripes, strophe, techies, torches, triceps, trochee, trophic, tropics