Having forty winks means taking a nap or a short sleep during the day. While it is a common phrase used to describe taking a rest or a nap, there are several antonyms that can be used to describe the opposite of this state. These antonyms include being active, energetic, awake, alert, and wide awake. Rather than falling asleep during the day, individuals who are active, energetic or alert are engaging in physical or mental activities that require effort, attention, and concentration. Being wide awake means being fully conscious and hardly sleeping. In conclusion, these antonyms describe the opposite of having forty winks, indicating individuals who are active, energized, or alert, rather than taking a nap.