1. the state of being no longer used or practiced; disuse
Usage: formal

Examples

• The old law fell into desuetude after decades of non-enforcement.
• Many traditional crafts have suffered from desuetude in modern times.
• The ancient ritual had fallen into complete desuetude by the 20th century.
• After years of desuetude, the theater was finally renovated and reopened.
• The practice of formal letter writing has largely fallen into desuetude.
• Legal scholars debated whether the statute’s desuetude rendered it invalid.