Quadral 3: Echo Chamber Very Hard

One word:

  1. It is used in music to describe structure, sound, or performance.
  2. It is used in math or logic to describe patterns, sets, or relationships.
  3. It is used in storytelling or literature to describe plot, character, or theme.
  4. (Twist) It must suggest circularity, echo, or self-reference.

AI will judge if your word fits—and if it's better than the AI's answer.

Need a hint?

For the AI answer, think "mirror image."