abatement, agio, allowance, bank discount, break, breakage, cash discount, chain discount, charge-off, cheapening, concession, cut, decline, deduction, deflation, depreciation, devaluation, discount, dive, drawback, kickback, lowering, markdown, nose dive, penalty, penalty clause, percentage, plummet, plummeting, plunge, premium, price cut, price fall, price reduction, rebate, rebatement, reduction, refund, rollback, sag, salvage, setoff, slash, slump, tare, time discount, trade discount, tret, underselling, write-off