Mawson, C.O.S., ed. (1870–1938). Roget’s International Thesaurus. 1922.

Class V. Words Releasing to the Voluntary Powers
Division (II) Intersocial Volition
Section IV. Possessive Relations
4. Monetary Relations

813. Discount.

   NOUN:DISCOUNT, abatement, concession, reduction, depreciation, allowance, qualification, set-off, drawback, poundage, agio, percentage; rebate, rebatement, backwardization [Eng.], backwardation [Eng.], contango [Eng. Stock Exchange]; salvage; tare [com.], tare and tret.
   VERB:DISCOUNT, bate, rebate, abate, deduct, strike off, mark down, reduce, take off, allow, give, make allowance; depreciate.
   ADJECTIVE:DISCOUNTING &c. v.; concessional; marked down; depreciative.
   ADVERB:AT A DISCOUNT, at a bargain, below par.