The term "in low esteem" refers to a situation where something or someone is not held in high regard or is considered as unworthy. However, there are several antonyms for this phrase, such as "admired," "respected," "esteemed," "prized," "valued," and "honored." These words indicate that the object or person is highly regarded and held in high esteem by others. For instance, a renowned scientist who has made significant contributions to the field of research is highly respected and often held in high esteem. Similarly, a humanitarian who dedicates their life to serving others is widely admired and honored for their selfless contributions. Therefore, the antonyms for "in low esteem" signify that someone or something is highly regarded, respected, and valued.