The word depolarizing 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 depolarizing
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Seven Letter Word Alert: (85 words)
adonize, adoring, agonize, aileron, airline, aligned, aligner, aneroid, angioid, anilide, anodize, dangler, darling, dealign, dealing, deliria, denarii, deraign, dialing, diazine, diazole, dingier, dipolar, draping, eliding, eloping, eroding, geoidal, glazier, gloried, gnarled, godlier, goldpan, grained, groaned, groined, idolize, ignored, iodizer, ionized, ionizer, ironage, lairing, larding, leading, leaping, learing, leopard, lionize, lipread, liriope, loading, negroid, opaline, opalize, operand, ordinal, pairing, paroled, pealing, pergola, piazine, pingled, pingler, plainer, praline, predial, preload, priding, prizing, proline, pronged, raiding, railing, reading, realign, reaping, redoing, roiling, zeroing, zingare, zingari, zingaro, zingier, zipline