The word eradication 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: 16
Highest Scoring Words With Friends™ Play In The Letters eradication
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Seven Letter Word Alert: (35 words)
aconite, airdate, aneroid, antacid, cairned, cantred, carinae, carotid, certain, citrine, conidia, cordate, crinoid, denarii, detrain, diction, diorite, edition, enactor, erotica, incited, inciter, inditer, inertia, nitride, noticed, otarine, radiant, radiate, tacnode, tiaraed, tradein, trained, tranced, triadic