What word describes someone who is completely baffled and very puzzled?

The term "perplexed" effectively describes a state of confusion or being completely baffled. When someone is perplexed, they are faced with something that is difficult to understand or solve, which aligns directly with the feeling of being puzzled or confused. This word captures the essence of feeling mentally challenged by a situation or problem to the point of uncertainty about how to proceed or make sense of it.

In contrast, while "puzzled" and "bewildered" also signify confusion, they carry slightly different connotations or degrees of intensity. "Puzzled" often implies a lighter sense of confusion, where the individual might be seeking a solution or understanding. "Bewildered," on the other hand, suggests a more profound sense of confusion but may not encompass the depth that "perplexed" does in terms of mental engagement and complexity involved. "Conflicted" refers more to having mixed feelings or contradictory ideas about a situation rather than being confused. Thus, "perplexed" stands out as the most fitting term for someone who is completely baffled and very puzzled.