Русско-англо-русский юридический словарь

‘By December 1941, when the United States entered the war, it was already convoying munitions to Britain, making most neutrality legislation a dead letter.’

‘Any federal law is likely to remain a dead letter unless we have built those hundreds of robust place-based coalitions ready to monitor the law's implementation and use it as an organizing tool.’

‘Environmental law, just like any other, is a dead letter if not enforced.’ (Oxford English and Spanish Dictionary)