Antonyms for the phrase "being interesting to" include "boring," "uninspiring," and "dull." These words describe things or individuals that fail to capture our attention or stimulate our curiosity. Similarly, "tedious," "humdrum," and "monotonous" are also antonyms for "being interesting to," evoking a sense of weariness or apathy. Conversely, antonyms for "being interesting to" may include "unappealing," "repugnant," or "displeasing." These words convey a negative reaction to something, such as an unpleasant smell or taste, that does not make one feel intrigued or captivated. Overall, the antonyms for "being interesting to" express disinterest in the subject or object being described.