The phrase "swept off one's feet" implies a feeling of overwhelming and sudden attraction or infatuation. Antonyms for this phrase could include "unimpressed," "indifferent," or "bored." These words suggest a lack of excitement or interest, and the inability to feel swept away by something or someone. Other antonyms could include "disgusted," "repulsed," or "uninterested." These words signal a strong and negative reaction to a situation or person, which is the opposite of being swept off one's feet. In brief, antonyms for "swept off one's feet" describe the opposite of a strong and positive emotional response.