Reneging, from the verb to renege.
Another word for going back is reverse
commitment = el compromiso
I am going back home = Me vuelvo a casa.
i made a commitment to a friend
Pignus.
Renegging. Recanting.
The Word Commitment originated in 1605-15; COMMIT+ -MENT.1605-15; commit + -ment
I made a commitment to quit smoking. My boyfriend made a commitment to me today by proposing.
officium
Relaxed or laid back.
going back, reversing (in a car)
The word is spelt as you have in the question.