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MI6

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WordReference Random House Unabridged Dictionary of American English © 2026

MI6 n. (in Great Britain)

the government's secret intelligence service.

M(ilitary) I(ntelligence, Section) 6

Collins Concise English Dictionary © HarperCollins Publishers::

MI6

Military Intelligence, section six; a former official and present-day popular name for the intelligence and espionage agency of the British Government

'MI6' also found in these entries (note: many are not synonyms or translations):

Forum discussions with the word(s) "MI6" in the title:

Comfort of his MI6-purchased semi
employee of GCHQ seconded to the MI6

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