Nondiscretionary is a term that describes something that is not subject to individual judgment or choice. The antonym of nondiscretionary is discretionary, which means something is subject to judgment, choice, or decision. Other antonyms for nondiscretionary include voluntary, optional, and elective. Nondiscretionary expenses are those that cannot be avoided, such as mortgage payments, utility bills, and taxes. Discretionary expenses, on the other hand, are those that can be adjusted or eliminated, such as entertainment, travel, or hobbies. In everyday life, making discretionary choices is fundamentally about taking responsibility for actions and making informed decisions based on available information.