Dismalise

This is, we fear, the case with many who dismalise all around them with their unavailing complaints and lamentations, instead of using proper means for self-improvement.

Source: wiktionary

Charley, changed not in nature but in lot, would become a unit to the year's list of "Juvenile Criminals," and serve to dismalise the visage of some excellent and sincere Exeter Hall orator, and to impart a sensational shock to an Exeter Hall audience.

Source: wiktionary

One of the things which is doing more harm than good and helping to dismalise this country and to discourage trade is the appalling idea that the Chancellor of the Exchequer has on austerity.

Source: wiktionary