1. plural of desuetude; the state of being no longer used or practiced; disuse.
Usage: formal; typically used in legal or historical contexts

Examples

• Many old laws have fallen into desuetudes and are no longer enforced.
• The tradition gradually fell into desuetudes as younger generations moved away.
• Several colonial-era regulations remain on the books but have long since fallen into desuetudes.
• The practice of formal letter-writing has largely fallen into desuetudes in the digital age.
• Ancient rituals that once held cultural significance have sunk into desuetudes.