1. having a healthy mind; not mentally ill
2. reasonable and sensible; showing good judgment

Examples

• The doctor declared him mentally sane and fit for trial.
• She remained sane despite the stressful situation.
• That’s a sane approach to solving the problem.
• Any sane person would avoid driving in this storm.
• His sane advice helped us make the right decision.
• The jury had to determine if the defendant was sane at the time of the crime.
• It’s not sane to spend all your savings on lottery tickets.