The word parochialisms 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: 25
Highest Scoring Words With Friends™ Play In The Letters parochialisms
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Seven Letter Word Alert: (60 words)
achiral, acholia, airmail, airmass, airship, amorphs, amphora, aphasic, caliphs, camphor, carhops, carpals, casspir, chamois, chorals, clamors, compass, haircap, impairs, impalas, ischial, isopach, lipomas, mailcar, marshal, mishaps, misship, morphic, mosaics, pachisi, parasol, pariahs, pascals, phrasal, plasmas, polaric, prismal, prosaic, psalmic, racisms, rascals, raspish, rosalic, sacrals, sailors, salamis, sarcasm, sarcoma, scalars, scholar, schorls, scorias, scrimps, shrimps, silicas, similar, socials, spacial, spasmic, spirals