Law failure to do the required thing at the proper time (e.g., inexcusable delay in enforcing a claim)
Origin of lachesMiddle English lachesse ; from Old French laschesse ; from lasche, lax, negligent ; from Vulgar Latin an unverified form lascus, metathetic for Classical Latin laxus, lax
A legal doctrine that bars a claimant from receiving relief where the claimant's delay in pursuing the claim has operated to the prejudice of the opposing party.
Origin of lachesMiddle English, slackness, negligence, from Anglo-Norman lachesse, laches, from Old French laschesse, from lasche, loose, remiss; see lush1.
From French lâches (“remissness, slackness”).
laches - Legal Definition
Equitable doctrine that precludes or limits relief to one who delays in acting or bringing a claim.