An act or course of action that is demanded of one, as by position, custom, law, or religion
An act of committing
I'm simply not ready to face that kind of commitment yet.
It wasn't commitment he was afraid of.
What commitment had Alex made?
Isn't our commitment to each other more important than a few words from clergy?
For the first time she thought about the fact that he had no commitment to them at all, yet he had risked his life for them.