What prefix is used to describe something that is outside of or beyond?

The prefix that indicates something is outside of or beyond is "extra-." This prefix often signifies an addition or something that exists outside the normal limits of what is defined. For example, terms like "extracurricular" refer to activities that are outside the regular school curriculum.

In contrast, the other prefixes have different meanings: "infra-" generally refers to something that is below or beneath, as seen in "infrastructure." "Trans-" denotes movement across or through, such as in "transport," which refers to carrying something from one place to another. "Super-" conveys a sense of being above, over, or superior, as in "superior." Each prefix conveys a distinct connotation, making "extra-" the correct choice when describing something that is outside of or beyond.