"Unwise" or "foolish" refers to actions or decisions that lack good judgment or common sense. People who are unwise often ignore logical reasoning or the potential consequences of their choices. This can lead to mistakes that could have been easily avoided with a more thoughtful approach. In many cultures, being unwise is associated with impulsivity and a disregard for advice. For example, a person might spend all their savings on a risky investment without researching it, demonstrating a lack of prudence. Such behavior can result in negative outcomes, highlighting the importance of wisdom in decision-making.