discount

[1]	reduce , mark down , deduct , lower , take/knock off
[2]	diminish , lessen , minimize , detract from
[3]	disregard , omit , ignore , pass/gloss over , overlook , brush off , dismiss
[4]	dismiss , disregard , brush aside , brush off , push aside , ignore

[1]	price reduction , deduction
[2]	discount rate , bank discount
[3]	rebate
[4]	deduction , reduction , mark-down , deduction , rebate , allowance