1. of, relating to, or characteristic of irrationalism; emphasizing emotion, intuition, or faith over reason and logic
Usage: formal; often used in philosophical or intellectual contexts
2. tending to act or think in ways that lack reason or logic; irrational in nature or approach
Usage: descriptive

Examples

• The irrationalistic philosophy rejected the idea that reason alone could explain human experience.
• His irrationalistic approach to decision-making often led to unpredictable outcomes.
• Some critics argue that certain religious movements are fundamentally irrationalistic.
• The irrationalistic tendencies in the movement emphasized emotion over evidence.
• She dismissed his irrationalistic fears as baseless and unfounded.
• Irrationalistic thinking can sometimes lead people to make poor financial decisions.