1. superlative form of unwise; showing the least good judgment or wisdom
Usage: superlative form

Examples

• That was the unwisest decision he had ever made.
• It would be unwisest to travel during the storm.
• She chose the unwisest moment to bring up the topic.
• Among all his choices, that was the unwisest.
• The unwisest course of action would be to ignore the warning.
• It’s unwisest to invest all your money in one stock.