The antonyms for "go slowly" are "speed up," "rush," and "hasten." These words indicate the opposite of moving at a slow pace. When you speed up or rush, you move quickly and with urgency. You can also hasten or hurry up to complete a task or reach your destination faster. These antonyms are useful when you need to increase your productivity, efficiency, or progress. However, they can also lead to mistakes, exhaustion, or accidents, especially if you disregard safety or quality. Therefore, it's essential to balance your speed with caution, mindfulness, and purpose, and know when to slow down.