Phrase guide

security service

name · noun · 4 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • sĭ-kyo͝or′ĭ-tē sûr′vĭs
  • Australian, Received-Pronunciation: /sɪˌkjʊə̯.ɪ.tiː ˈsɜː.vɪs/
  • Australian, Received-Pronunciation: /sɪˌkjɔː-/
  • Canada, General-American: /sɪˌkjʊɹ.ɪ.ti ˈsɜɹ.vɪs/
  • New-Zealand: /səˌkjʉ(ː)ə̯.ə.tiː ˈsøː.vəs/
  • New-Zealand: /səˌkjoː-/
  • Scotland: /sɪˌkjʉɹ.ɪ.ti ˈsɛɹ.vɪs/
  • India: /sɪˌkjoː(ɾ).ɪ.ʈiː ˈsɜː(ɾ).vɪs/
  • India: /sɪˌkjuːɾ-/
  • India: /-ˈsɛɾ.vɪs/
  • India: /-ˈsəɾ.vɪs/

1

name

Meaning 1

MI5.

Definition source: English Wiktionary via Wiktextract

Usage: UK, formal

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A government organization established to protect its nation and its secrets from enemies.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

noun

Meaning 3

Used other than figuratively or idiomatically: see security, service.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

the government agency in the United Kingdom that is responsible for internal security and counterintelligence on British territory

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: MI, Military Intelligence Section 5

Antonyms: none provided

Broader terms: international intelligence agency

History

Etymology

No etymology was provided for this word.

Across languages

Translations

18 source translations are retained for this English entry.

  • Chinese Mandarin: 國家安全機構 /国家安全机构 (guójiā ānquán jīgòu) — government organization
  • Czech: zpravodajská služba — government organization
  • Dutch: Geheime dienst — government organization
  • Finnish: suojelupoliisi — government organization
  • Finnish: turvallisuuspalvelu — government organization
  • French: service de sécurité — government organization
  • German: Sicherheitsdienst — government organization
  • Hungarian: elhárítás — government organization
  • Hungarian: titkosszolgálat — government organization
  • Hungarian: nemzetbiztonsági szolgálat — government organization
  • Italian: servizio segreto — government organization
  • Japanese: セキュリティー·サービス (sekyuritī-sābisu) — government organization
  • Japanese: 保安部 (hoanbu) — government organization
  • Polish: służba bezpieczeństwa — government organization
  • Portuguese: agência de segurança — government organization
  • Russian: слу́жба безопа́сности (slúžba bezopásnosti) — government organization
  • Spanish: servicio de seguridad — government organization
  • Swedish: säkerhetstjänst — government organization