Secret Intelligence Service

proper noun

MI6

Similar
MIMilitary Intelligence Section 6

Meanings

proper nounthe Secret Intelligence Service
  1. UKformalMI6

    In this section […] “intelligence service” means the Security Service, the Secret Intelligence Service or GCHQ […]

    2010, Parliament of the United Kingdom, “Other provisions about offences, section 13(6)”, in Bribery Act 2010, page 11

Synonyms & antonyms

nounthe government agency in the United Kingdom that is responsible for internal security and counterintelligence overseas

Similar
MIMilitary Intelligence Section 6
Broader
international intelligence agency
Also see

Synonym sets from Open English WordNet, CC BY 4.0.

Cite this entry
APA

Secret Intelligence Service. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Secret%20Intelligence%20Service

MLA

“Secret Intelligence Service.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Secret%20Intelligence%20Service. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “Secret Intelligence Service,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Secret%20Intelligence%20Service.

Source: Secret Intelligence Service on Wiktionary, CC BY-SA 4.0.