custos regni

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custos regni

/ˈkʌstɒs ˈɹɜɡnaɪ/ UK
/ˈkʌstəʊs ˈɹɜɡnaɪ/ UK

Where it comes from

First attested in the plural in October 1644 and in the singular in 1683; Latin: custōs (“guard”, “protector”; “guardian”; “keeper”, “custodian”) + rēgnī (“of royal power”; genitive singular of rēgnum, “royal power”, “kingdom”) = “custodian of royal power” ≈ “guardian of the realm”.

noun custodes regni

A kind of viceregal locum tenens appointed, either alone or jointly, to execute the political duties of a monarch during his or her absence from the seat of government. If the King be abſent, and taken captive, the People may give the Royall power to one, or to ſome few to exerciſe it as cuſtodes regni.

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MLA

"custos regni." Wiktionary, via Micwyn, micwyn.com/word/custos%20regni. Accessed 6 Nov. 2026.

APA

custos regni. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/custos%20regni

Chicago

"custos regni." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/custos%20regni.

BibTeX

@misc{custos_regni_2026,
  title = {custos regni},
  howpublished = {Wiktionary, via Micwyn},
  year = {2026},
  url = {https://micwyn.com/word/custos%20regni},
  urldate = {2026-11-06}
}