1. done without careful thought or consideration; rash or imprudent
Usage: formal
2. not having received advice or counsel
Usage: formal

Examples

• His unadvised decision to quit his job without another offer proved costly.
• The unadvised investment in risky stocks led to significant losses.
• She made an unadvised comment that offended several colleagues.
• The young entrepreneur proceeded unadvised, without consulting experienced mentors.
• It would be unadvised to travel alone in that dangerous region.
• His unadvised actions during the crisis made the situation worse.