Dog tired, a common expression used to describe extreme fatigue or exhaustion, can be replaced with a range of antonyms that signify energy or liveliness. Refreshed, invigorated, recharged, energetic, and lively are excellent examples of antonyms for dog tired. While dog tired represents feeling exhausted as though one has worked like a dog, refreshed implies feeling energetic or alert after a good rest. Invigorated and recharged suggest feeling renewed and revitalized. Energetic denotes a high level of physical or mental activity, while lively implies vivacity, enthusiasm, or animation. As such, swapping out dog tired for any of these antonyms changes the entire tone and sentiment of a sentence or conversation.