Abstinence \ˈab-stə-nən(t)s\ (noun)
–– voluntary forebearance especially from indulgence of an appetite or a craving or from eating some food.
Use in a sentence:
Let’s remember to observe fasting and abstinence this coming Ash Wednesday.
Abstinence. (n.d.). In Merriam-Webster online. Retrieved February 20, 2012 from http://www.merriam-webster.com/dictionary/abstinence.