1. not based on logical thinking or careful consideration

Examples

• His unreasoned fear of flying prevented him from taking the job overseas.
• The committee rejected her unreasoned proposal without discussion.
• She made an unreasoned decision to quit her job on the spot.
• The politician’s unreasoned attacks on his opponent backfired.
• Their unreasoned hatred of change hurt the company’s progress.
• The judge criticized the lawyer’s unreasoned arguments.