👉 Undeterrability is a concept in philosophy that refers to an inability or lack of ability to understand, interpret, and make sense of one's own thoughts or feelings. In other words, it implies a state where individuals are unable to perceive or comprehend their own mental states and experiences. The term comes from the Greek word "undert," which means "under" or "below," as in not being above oneself. It refers to an inability to fully understand one's own thoughts and feelings,