Dictionary.net

lower someone's spirits; make downhearted; "These news depressed her"; "The bad state of her child's health demoralizes her"

corrupt morally or by intemperance or sensuality; "debauch the young people with wine and women"; "Socrates was accused of corrupting young men"; "Do school counselors subvert young children?"; "corrupt the morals"

confuse or put into disorder; "the boss's behavior demoralized everyone in the office"

lower someone's spirits; make downhearted; "These news depressed her"; "The bad state of her child's health demoralizes her"

corrupt morally or by intemperance or sensuality; "debauch the young people with wine and women"; "Socrates was accused of corrupting young men"; "Do school counselors subvert young children?"; "corrupt the morals"

confuse or put into disorder; "the boss's behavior demoralized everyone in the office"

To corrupt; deprive of spirit or energy; throw into confusion; disorganize; confuse.

Demoralization.

To bring down or corrupt in morals: to lower the morale-that is, to deprive of spirit and confidence.

To undermine or corrupt the morals or spirit of, and, in an army, the discipline.