The word "ko'd" is a slang term that means "knocked out," usually used in reference to a boxer who has been knocked out in a fight. Some antonyms for this term might include "awake," "conscious," "alert," or "vigilant." These words all imply a state of awareness or wakefulness, rather than being unconscious. Other antonyms might include "uninjured," "unscathed," or "unharmed," which suggest a lack of physical injury or harm. Regardless of the specific antonym used, the word "ko'd" implies a state of defeat or injury, making its opposite a term that suggests safety, success, and well-being.