1. comparative form of crazy; more mentally ill or unstable
Usage: can be offensive when referring to mental illness
2. comparative form of crazy; more foolish or unreasonable
Usage: informal
3. comparative form of crazy; more extremely enthusiastic or excited
Usage: informal

Examples

• The traffic gets crazier during rush hour.
• His ideas keep getting crazier each day.
• She’s even crazier about soccer than her brother.
• The party became crazier as the night went on.
• That plan sounds crazier than the last one.
• The weather has been getting crazier lately.