1. (n.) The act of derogating, partly repealing, or lessening in value; disparagement; detraction; depreciation; -- followed by of, from, or to.

2. (n.) An alteration of, or subtraction from, a contract for a sale of stocks.

attrition belittling comedown contempt curtailment cut cutting debasement decadence decadency declension declination decline decrease decrement decrial deformation degeneracy degenerateness degeneration degradation demotion depletion depravation depravedness depreciation descent deterioration detraction devolution diminution dip disapproval discrediting disgrace disparagement downtrend downturn downward mobility downward trend drop dying ebb effeteness extraction fading failing failure failure of nerve faint praise fall falling-off impairment indignity involution knocking lapse lessening loss of tone lukewarm support minimizing putting down reduction regression remission retraction retrenchment retrocession retrogradation retrogression shortening shrinkage slighting slippage slump sour grapes truncation wane