laches
/ˈleɪtʃɪz/noun
mass noun
- Law unreasonable delay in making an assertion or claim, such as asserting a right, claiming a privilege, or making an application for redress, which may result in refusal【律】延误（指申述或要求如维权申述、特许利益和索赔等要求的提出被无理由地延误, 因而可能遭法院拒绝）。
词源
late Middle English （in the sense 'slackness, negligence'）： from Old French laschesse, from lasche 'loose, lax', based on Latin laxus. The current sense dates from the late 16th cent.