erosion
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erosion
noun abrasion, attrition, breakdown, crumbling, decay, decrease, decrement, detrition, diminishment, diminution, disintegration, dissolution, gradual eating away, gradual wearing away, grinding, lessening, loss, recession, reduction, rubbing away, shrinkage, thinning out, waste, wear, wearing away, wearing down by frictionSee also: attrition, decline, decrement, deterioration, detriment, dissolution, expense, sacrifice, spoilage, wear and tear