The phrase "knock one's socks off" is an idiom meaning to impress or surprise someone. To express the opposite meaning, one could use antonyms such as "bore," "disappoint," "underwhelm," or "fail to inspire." These terms convey a lack of excitement or interest, as opposed to the energy and passion that the original phrase implies. Other antonyms could include "dishearten," "demotivate," or "depress," which suggest negative emotions and feelings of loss or failure. Ultimately, by choosing the appropriate antonyms, one can effectively communicate the exact opposite of the original phrase, shifting the focus from excitement and positivity to indifference or disappointment.
