The word reductivism 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: 23
Highest Scoring Words With Friends™ Play In The Letters reductivism
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Seven Letter Word Alert: (43 words)
ceriums, cervids, credits, crudest, cruised, crusted, cursive, decrust, deistic, diciest, dietics, dimeric, directs, dirties, ditsier, diverts, dustier, metrics, miscite, miscued, misedit, mistier, mustier, rectums, reducts, revisit, revuist, rudites, stimied, stivier, strived, studier, suicide, tediums, tidiers, timider, tridems, tumeric, uveitis, verdict, victims, virtues, visited