Which of the following is a synonym for "esoteric"?

The term "esoteric" refers to knowledge that is intended for or likely to be understood by only a small, specialized audience. It often signifies something that is complex, obscure, or difficult for the average person to comprehend due to its specialized nature.

"Obscure" fits as a synonym because it describes something that is not clear or difficult to understand, aligning closely with the meaning of "esoteric." Both terms convey a sense of complexity or limitation in understanding, suggesting that only a select group may grasp the concepts fully. This connection highlights the idea of exclusivity in knowledge, which is central to the definition of "esoteric."

In contrast, other options like "accessible" imply something that is easy to understand or available to many, which is the opposite of the notion behind "esoteric." Similarly, while "mundane" refers to something ordinary or commonplace, it lacks the connotation of specialized knowledge and therefore does not align with the concept of being understood only by a small group. The repetition of "esoteric" also does not serve as a synonym, as it merely restates the original term without offering a different perspective or meaning.