General Antonyms:
* Foolishly: This is a direct opposite, implying a lack of judgment or understanding.
* Carelessly: This implies a lack of thoughtfulness or attention to detail.
* Rashly: This suggests acting impulsively and without considering the consequences.
More Specific Antonyms:
* Ignorantly: This implies a lack of knowledge or understanding.
* Thoughtlessly: This suggests a lack of consideration or reflection.
* Imprudently: This emphasizes a lack of caution or discretion.
* Stupidly: This is a harsher term implying a complete lack of intelligence.
The best antonym will depend on the specific situation and what you want to emphasize.