1. in a way that is based on reason and logic rather than emotion
2. in a way that shows clear thinking and good judgment

Examples

• She approached the problem rationally, considering all the facts.
• It's important to think rationally during a crisis.
• He rationally explained his decision to the committee.
• The scientist rationally analyzed the experimental data.
• They discussed the issue rationally without getting emotional.
• She rationally weighed the pros and cons before choosing.
• The judge rationally considered all the evidence presented.