1. the quality or state of being firmly established by long persistence; deep-rooted habit or practice
Usage: formal

Examples

• The inveteracy of his smoking habit made it nearly impossible to quit.
• She was surprised by the inveteracy of local customs in the small town.
• The inveteracy of corruption in the system required comprehensive reform.
• His inveteracy in opposing change frustrated his colleagues.
• The inveteracy of the dispute between the neighbors lasted for decades.
• The doctor warned about the inveteracy of certain addictive behaviors.