1. the quality of being undisciplined, unrestrained, or lacking moral control
2. deliberate cruelty or maliciousness without justification
3. excessive luxury or extravagance

Examples

• The wantonness of the vandals shocked the entire community.
• His wantonness with money eventually led to bankruptcy.
• The novel criticized the wantonness of the wealthy elite.
• The judge condemned the wantonness of the unprovoked attack.
• She was appalled by the wantonness of their destructive behavior.
• The wantonness of their spending habits concerned their parents.