Royal Highness

American

noun

(in England)
1. a title used prior to 1917 and designating a brother, sister, child, grandchild, aunt, or uncle belonging to the male line of the royal family.
2. a title used since 1917 and designating a child or grandchild of the sovereign.
3. any person given this title by the Crown.
(in other countries) a person who is a member of a royal family.

Royal Highness British

noun

a title of honour used in addressing or referring to a member of a royal family

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of Royal Highness

First recorded in 1645–55

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

From Home Goods to His Royal Highness King Charles lll’s purveyor, 15 places Los Angeles designers say they shop for rugs.

From Los Angeles Times • Apr. 3, 2026

How Virginia Giuffre’s accusations of a decade ago finally brought His Royal Highness Prince Andrew, Duke of York, down to simply Andrew.

From Slate • Nov. 5, 2025

Princess Diana lost Her Royal Highness but got to keep her princess designation after divorcing Charles.

From The Wall Street Journal • Oct. 30, 2025

"Her Royal Highness looks forward to dedicating herself to her studies in the years to come," Norway's royal household said in a statement.

From BBC • May 28, 2025

"Lady Gabrielle, princess du sang, and first lady-of-honor to Her Royal Highness, please step forward."

From "The Belles" by Dhonielle Clayton

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023