A prince regent.
Other Word Forms
Origin of regent
- Middle English from Old French from Latin regēns regent- ruler from present participle of regere to rule reg- in Indo-European roots
From American Heritage Dictionary of the English Language, 5th Edition
- From Old French regent, from Latin regÄ“ns (“ruling, as a noun, a ruler, governor, prince"); present participle of regō (“I govern, I steer").