depreciating, depreciative, depreciatory -- (tending to decrease or cause a decrease in value; "a depreciating currency"; "depreciatory effects on prices")
belittling, deprecating, deprecative, deprecatory, depreciative, depreciatory, slighting -- (tending to diminish or disparage; "belittling comments"; "managed a deprecating smile at the compliment"; "deprecatory remarks about the book"; "a slighting remark")