General:
* Lifestyle - This is the most common and direct synonym for "way of life."
* Habits - This emphasizes the routine and recurring patterns of behavior that make up a way of life.
* Culture - This refers to the shared customs, beliefs, and practices of a group of people.
* Ethos - This emphasizes the fundamental values and beliefs that guide a way of life.
* Mode of existence - This is a more formal and philosophical way of referring to a way of life.
More Specific:
* Subculture - This refers to a distinct group within a larger culture that has its own unique customs and practices.
* Philosophy - This refers to a set of beliefs and principles that guide a person's way of life.
* Tradition - This refers to customs and practices that have been passed down through generations.
* Worldview - This refers to a person's fundamental beliefs about the world and their place in it.
The best word to use will depend on the context of your sentence and the specific meaning you want to convey.