dead letter Meaning in Cambridge English Dictionary
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Meaning of "dead letter" - English Dictionary

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dead letternoun

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dead letter noun (MAIL)

[C] a letter that cannot be delivered to the address written on it and cannot be returned to the person who sent it: the dead-letter office

dead letter noun (LAW/AGREEMENT)

[C usually singular] a law or agreement that is no longer effective: The ceasefire treaty was a dead letter as soon as it was signed, as neither side ever had any intention of keeping to it.
Translations of “dead letter”
in Chinese (Traditional) 信件, 死信,無法投遞的信件…
in Chinese (Simplified) 信件, 死信…
(Definition of dead letter from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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