Instead of beating a hasty retreat, one can opt for facing the situation head-on or standing their ground. Facing the issue with confidence and determination is a suitable antonym for retreating quickly. One can also stay put and handle the situation calmly instead of making a quick escape. Some other antonyms for beating a hasty retreat include confronting the problem, resolving the issue, tackling the challenge, and standing firm. It is important to remember that sometimes retreating quickly can be the best option to ensure personal safety, but in other situations, facing the challenge can lead to growth and success.