Demoralize (verb)

To weaken or undermine the morale or confidence of someone or a group of people; to dishearten or discourage.

Origin:

The term demoralize is derived from the french word "démoraliser", which is made up of "dé" meaning "down" and "moral" meaning "of manners or morals". it has been used in english since the late 17th century.

Examples:

1. The constant criticism from his boss had begun to demoralize him and he was considering quitting his job.
2. The soldiers had become demoralized after months of fighting in the trenches.
3. The team's losing streak had begun to demoralize the players and they were losing their motivation.
4. The news of the company's financial troubles had demoralized the employees and many of them were looking for other jobs.
5. The constant setbacks had begun to demoralize the team, but they refused to give up.