The antonyms for the word "foolheaded" are numerous, and they all imply good judgment and wisdom. Some of the antonyms include smart, intelligent, astute, perceptive, sensible, knowledgeable, prudent, and wise. These words describe someone who thinks carefully before acting or making a decision, unlike a foolheaded person who acts impulsively without considering the consequences. Moreover, being wise is a desirable attribute that is often associated with successful people, while being foolheaded may lead to failure and disappointment. In conclusion, using antonyms for the word "foolheaded" when describing someone may help highlight their intelligence and good judgment.