Antonyms for the phrase "be a component" include "be excluded," "be separate," and "be out of the picture." When something is said to "be a component," it means that it is an essential part of a larger whole. Conversely, when something is said to be excluded, it means it is not included in the larger whole. Similarly, when something is said to be separate, it means it is not connected to the larger whole, while being out of the picture means it is not relevant or important to the larger whole. By understanding the antonyms for "be a component," we can better understand the meaning of the phrase in context.