Demoralize De*mor"al*ize, v. t. [imp. & p. p. {Demoralized}; p. pr. & vb. n. {Demoralizing}.] [F. d['e]moraliser; pref. d['e]- (L. dis- or de) + moraliser. See {Moralize}.] To corrupt or undermine in morals; to destroy or lessen the effect of moral principles on; to render corrupt or untrustworthy in morals, in discipline, in courage, spirit, etc.; to weaken in spirit or efficiency. [1913 Webster]

The demoralizing example of profligate power and prosperous crime. --Walsh. [1913 Webster]

The vices of the nobility had demoralized the army. --Bancroft. [1913 Webster]

The Collaborative International Dictionary of English. 2000.