A British government and Foreign Office term for a diplomatic telegram — official encrypted communication sent between the Foreign Office in London and British embassies and high commissions abroad. Used in diplomatic and intelligence contexts. The word is a portmanteau of 'diplomatic' and 'telegram' or 'telegramme.'
The ambassador received the diptel at midnight and convened the staff immediately.
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(UK) A diplomatic telegram.
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Regional slang from around the English-speaking world — British, Australian, Irish, Caribbean, Nigerian, Filipino, AAVE, and the hyphenated-English dialects that make the internet sound local.
See all Regional & Other slang on Slangora.