Clear-headedness refers to the state of being level-headed, alert, and rational in one's actions and thoughts. Antonyms for clear-headedness are disorientation, confusion, and foggy-mindedness. Disorientation is the inability to navigate and understand one's surroundings, leading to confusion and a lack of clear-headedness. Confusion is the mental state of being unable to think clearly, leading to indecision and a lack of clear-headedness. Foggy-mindedness is a vague, hazy state of mind that makes it difficult to focus and process information, further leading to a lack of clear-headedness. These antonyms of clear-headedness can hinder decision-making processes and lead to negative consequences.