The word relativizing 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: 29
Highest Scoring Words With Friends™ Play In The Letters relativizing
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Seven Letter Word Alert: (47 words)
airline, aligner, elating, eviting, gelatin, genital, glazier, granite, igniter, ilvaite, inertia, ingrate, initial, intagli, inviter, lairing, latrine, learing, leaving, lignite, lintier, railing, ratline, realign, reaving, reliant, retinal, ringlet, tagline, tailing, tangier, tearing, teazing, tiering, tingler, trenail, trivial, vearing, veiling, ventral, vialing, vinegar, vintage, vitrine, zingare, zingari, zingier