1. anger or irritability; a tendency to become angry easily
Usage: formal or literary; often used in the phrase 'bilious choler' or to describe a temperament
2. in medieval and Renaissance medicine, one of the four humors of the body, believed to cause anger and a hot temperament when in excess
Usage: archaic; historical medical theory

Examples

• His choler rose when he heard the insulting remark.
• The king's choler was legendary; courtiers learned to avoid him on bad days.
• She struggled to control her choler during the heated debate.
• Medieval physicians believed that an excess of choler made a person hot-tempered.
• His quick choler often got him into trouble with his colleagues.