deprecate / depreciate

The first and fully accepted meaning of deprecate is ?to express disapproval of.? But the word has steadily encroached on the meaning of depreciate. It is now used, almost to the exclusion of depreciate, in the sense ?to belittle or mildly disparage,? as in He deprecated his own contribution. In an earlier survey, this newer sense was approved by a majority of the Usage Panel.    1