The word collectivisms 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: 28
Highest Scoring Words With Friends™ Play In The Letters collectivisms
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Seven Letter Word Alert: (44 words)
cellist, ciscoes, clitics, closest, closets, colitis, collect, collies, cometic, cosiest, elicits, elitism, icicles, illites, iolites, limelit, meiosis, meiotic, millets, miscite, missile, mistell, misvote, mitoses, mitosis, molests, motives, oecists, oiliest, ossicle, ovicell, seismic, silicle, similes, sitcoms, solicit, somites, somitic, stimies, stomies, victims, violets, violist, vitelli