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Rupert

(derogatory, slang, military) A junior army officer.

ˈɹupɚtCurrent186 viewsLast reviewed Jun 29, 2026+ Add a definition
🇬🇧 British & Irish slang
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10 citations · last seen May 2026

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UK
#1·Apr 27, 2026UK

(derogatory, slang, military) A junior army officer.

Origin: A name, brought to England by Prince Rupert of the Rhine in the seventeenth century. . The geometry sense is also a reference to Prince Rupert, who posed the question of whether a cube could be passed through a hole made in another cube of the same size. Origin information sourced from Wiktionary contributors (CC BY-SA 4.0).
Heard in the wild
  • “Rupert Giles was never the same after Buffy destroyed Sunnydale.”

    — Bluesky· May 2026
  • “Unfortunately this would probably result in Zia Yusuf or Rupert Lowe or someone suggesting the Navy use them to shoot up random shipping in the Channel”

    — Bluesky· May 2026
  • “seeing Farage for the fraud he is & are moving away from him, perhaps in some instances onto supporting other right-wingers, such as Rupert Lowe, but that splits their support when it comes to having elections, which is very important.”

    — Bluesky· May 2026
  • “I thought this was Rupert Everett www.theguardian.com/fashion/gall...”

    — Bluesky· May 2026
  • “Should Rupert Lowe – leader of the fledgling Restore Britain party and its only MP – ever become Prime Minister, a new video has given fresh insight into how the MP for Great Yarmouth would approach cycling and active travel...”

    — Bluesky· May 2026
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UK
#2·Apr 27, 2026UK

(geometry) Having or relating to the property of being able to pass through a copy of itself.

2022, E. Scott, Two Sufficient Conditions for a Polyhedron to be (Locally) Rupert:
Heard in the wild
  • “Apparently Rupert Everett is in my city at the moment, can someone teach me how to find celebrities in the wild cause I woukd kill to meet him, he's one of my all timers...”

    — Bluesky· May 2026
  • “And that is explicitly why Rupert sued his own estate trust and paid off his other children to relinquish controlling shares to Lachlan Murdoch, ensuring that Fox and other properties stay conservative.”

    — Bluesky· May 2026
  • “Please Pope Leo is it possible for the holy see to revoke, rescind or repeal the Papal Knighthood bestowed upon Keith Rupert Murdoch for the lies and influence he's peddled brainwashing maga. Forgive my alliteration Kind regards Muz”

    — Bluesky· May 2026
  • “He started as Jerry Langford but is now turning into Rupert Pupkin. Which is at least a novel trajectory.”

    — Bluesky· May 2026
  • “Looks more like Rupert Murdoch than Zack Polanski”

    — Bluesky· May 2026
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UK and Irish slang — Cockney, Scouse, Geordie, Yorkshire, Glaswegian, Brummie, Welsh, West Country, plus Irish English. Centuries of regional dialects feeding into modern British and Irish street talk.

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