I assume the word "fool" has the same meaning as an "idiot" or "stupid". Then, are they interchangeable in this context?
Native speaker’s answer
Rebecca
Good question! In this context, they are not interchangeable. Here "fool" means a lack of judgment or critical thinking about a situation, but he still has good general intelligence. The word "idiot" implies a lack of general intelligence. "Stupid" is the most similar to "fool" in this context. "Stupid" can mean the same thing as "idiot", but here it would imply that he was only "stupid" with this one thing, and not in general. Ex: How could I have been so stupid?! I should have noticed the problems. Ex: Tom's an idiot most of the time. But you'll grow to like him. Ex: I made a fool out of myself by trusting her. Ex: You're a fool for not seeing the good in the situation.