1. the typical way of life or manner of living that is characteristic of an individual or group, as expressed by behaviors, attitudes, interests, and other factors.

2. in the individual psychology of Alfred Adler, an individual’s characteristic way of overcoming or compensating for feelings of inadequacy. According to Adler, a lifestyle is first adopted in childhood, when the key factors informing it will be genetic endowment, upbringing, and interpersonal relations within the family.