• Regency

    Origin

    From Latin rex/regere, and English abstract-noun suffix -ency.

    Full definition of regency

    Noun

    regency

    (countable and uncountable; plural regencys)
    1. A system of government that substitutes for the reign of a king or queen when that king or queen becomes unable to rule.
    2. The time during which a regent is in power.
    © Wiktionary