To define is to limit.

Scarlett: Oh, Rhett, Rhett please don't say that. I'm so sorry, I'm so sorry for everything.
Rhett: My darling, you're such a child. You think that by saying "I'm sorry," all the past can be corrected. Here, take my handkerchief. Never, at any crisis of your life, have I known you to have a handkerchief.

~

"i'm sorry" falling from your lips in the dark when i am barely awake does not make anything okay.