Phrase guide

custos regni

noun · 1 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.

  • Received-Pronunciation: kŭsʹtŏs rĕgʹnī
  • Received-Pronunciation: kŭsʹtōs rĕgʹnī
  • Received-Pronunciation: /ˈkʌstɒs ˈɹɜɡnaɪ/
  • Received-Pronunciation: /ˈkʌstəʊs ˈɹɜɡnaɪ/

1

noun

Meaning 1

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.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

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”.