The word staphylococci is playable in Words With Friends™, but 1 blank substituting for the letter 'c' is 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: 26
Highest Scoring Words With Friends™ Plays In The Letters staphylococci
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Seven Letter Word Alert: (43 words)
accloys, acyclic, apishly, cahoots, calicos, caliphs, calypso, capitol, chaotic, clastic, clayish, coalpit, coltish, copilot, copycat, copyist, cyclist, cyclops, cytosol, haptics, hastily, isopach, oocytic, ooliths, ooplast, opacity, optical, piccolo, plastic, psychic, scythic, soapily, soothly, sootily, splatch, splotch, stoical, sylphic, topical, topsail, topsoil, toyshop, typical