The antonyms for "being equivalent to" are "inferior to," "unequal to," "opposite of," and "different from." These antonyms imply comparison and contrast, indicating varying degrees of similarity or dissimilarity. "Inferior to" suggests a lowered status or value, while "unequal to" suggests a lack of equivalence in terms of quantity or quality. "Opposite of" highlights the differences or contrasts between two entities, while "different from" underlines the distinction or diversity between them. Using antonyms can add nuance and complexity to language and help to convey a more precise meaning in communication.