Emily Dickinson Lexicon

DE-PRE'CIATE, v.t. [Low L. depretio; de and pretium, price; Fr. depriser. See Price.]

1. To lessen the price of a thing; to cry down the price or value.
2. To undervalue; to represent as of little value or merit, or of less value than is commonly supposed; as, one author is apt to depreciate the works of another, or to depreciate their worth.
3. To lower value. The issue of a superabundance of notes depreciates them, or depreciates their value.