The phrase "most conked" implies being knocked out or deeply asleep. Its antonyms would be words that convey alertness, wakefulness, or activity. Some potential antonyms for "most conked" could include energetic, alert, wide awake, active, bustling, vibrant, lively, and fresh. Alternatively, you could use contrasting phrases such as "fully alert" or "wide awake and attentive." Antonyms for "most conked" will depend on the context and intended meaning of the sentence in which it is used.