Characteristic Spirit, or ETHOS, is a term used to describe the attitude, beliefs, and values of a particular group or individual. It is often used to refer to the spirit of a nation, organization, or culture. It is also used to refer to the moral CHARACTER of an individual or group. ETHOS is derived from the Greek word for 'CHARACTER' and is closely related to the concept of ETHOS, which is the set of values that guide a person's behavior.