Antonyms for "be equivalent" include words such as "contrast," "differ," "disparate," and "vary." When two things are said to be equivalent, they are said to have the same value, meaning, or worth. However, when two things are disparate or vary, they have different qualities, characteristics, or values. When things contrast or differ, they are completely opposite or not alike in any way. By understanding the antonyms for "be equivalent," we can better recognize the differences between things, which can help us make more informed decisions and understand the world around us better.