individualism

noun4

1. •
   The tendency for a person to act without reference to others, particularly in matters of style, fashion or mode of thought.

   • He believes that self-improvement and its growing popularity are symptoms of what he calls individualism. — 2019
2. •
   The moral stance, political philosophy, or social outlook that promotes independence and self-reliance of individual people, while opposing the interference with each person's choices by society, the state, or any other group or institution.

   • Republicans and Democrats interpret individualism differently, and those divides are more pronounced than ever in our deeply polarized political climate. — 2020
3. •
   The doctrine that only individual things are real.
4. •
   The doctrine that nothing exists but the individual self.