👉 Undecayableness is a concept in psychology that describes the inability to develop or maintain a certain characteristic, such as mental acuity (ability to think), concentration, or memory. This term can be used to describe any aspect of an individual's cognitive abilities or performance that does not improve over time, despite efforts to reinforce these skills. In simpler terms, undecayableness refers to the inability to develop or maintain a certain characteristic in a person's life, such as mental acuity