It goes beyond the “F” word.
Forgiveness isn’t enough.
When someone has wronged you (or you’ve wronged someone), depending on the depth of the pain, there can be a sense of nothing ever being enough to cover the hole, fill the void, make things even.
“An eye for an eye” is the old wisdom. You wrong me, I take an equal pain from you. “An eye for an eye makes the whole world blind” later teaching would caution. What is justice? Do people ever get what they deserve? Should we?