The phrase "yea big" is often used figuratively to describe the size of an object. However, when looking for antonyms for this expression, we must consider words that describe not only a smaller size but also a larger one. Antonyms for "yea big" could include "teeny-tiny," "minuscule," "microscopic," "diminutive," or "tiny." However, on the opposite end of the scale, antonyms could also include "gigantic," "colossal," "massive," "enormous," or "monstrous." Therefore, when searching for antonyms for "yea big," it's essential to consider both the larger and smaller descriptors of size in order to accurately describe the intended object.