the answer is EXPIATORY
Probably 'expiatory'
A word that means capable of making mistakes is "fallible." It refers to the inherent ability of individuals to err or make errors, highlighting the human condition of imperfection. This term is often used in contexts related to judgment, decision-making, and reliability.
Words for "making capable" include:enablingfacilitatingallowing
There is no such word as "vallibity". Possibly you mean 'fallibility' - this means ; Capable of making an error.
Another word for capable is able to.
The general word is capable.
aerial
potential
capable
capable of being transferred
Capable of being reached!
means capable of handling errors