Universal in metaphysics refers to something that exists or applies to everything. This means it is true for all things, all people, all places at all times. Imagine when you have a toy that you like to play, you push it on the floor, and it moves, and the same thing happens every time you push it. This is an example of a universal law.
In metaphysics, we use the term "universal" to describe ideas or concepts that are always true, regardless of time, culture, or location. For instance, the law of gravity is a universal law. It means that everything that has mass, like you and me, is affected by gravity. It does not matter if you are on Earth, the moon, or a distant planet. The force of gravity will always be present and will always pull objects towards each other.
Another example of a universal concept is love. Love is a feeling that exists in all cultures, at all times, and for all people. Even though the expression of love may look different in different cultures, the feeling is universal. We all have the capacity to love and feel loved.
Therefore, when we say something is universal in metaphysics, we mean it applies to everything, everywhere, and at all times. It is a concept that is always true and can help us understand the world around us.