The Prince and Princess of Wales have enjoyed a loving relationship for over two decades—but, like any couple, they have their rows from time to time. A royal author claimed, per The Mirror, that William employs a seemingly innocuous word in conversation with Kate to indicate that he is angry with her—and, admittedly, it’s one you might not expect.
If William said this word to his wife around anyone else—be it a private secretary or a member of the public—no one would think twice. But Kate knows its implications, and that it means her husband is cross with her.
Royal author Tom Quinn wrote in his book Gilded Youth: An Intimate History of Growing Up in the Royal Family that when William is upset with Kate, he indicates his displeasure with one word: "darling." Typically, William’s pet names for Kate are “babe” or “babykins,” but when he’s mad, “he is more likely to call her darling,” The Mirror writes. (William and Kate, who both have a keen sense of humor, also have rather snarky nicknames for one another: William refers to Kate as “Duchess of Dolittle,” a jab at Kate’s reputation for not taking on as many engagements as other members of the royal family, and Kate calls William “Baldy,” for, um, obvious reasons.) Quinn said that calling Kate “darling” is one of the “signs of his annoyance” with his wife, and that William’s tone of voice would also likely change in those circumstances.
Quinn added that the couple is prone to occasional but fierce fights, “during which they may even throw things at one another,” The Mirror reports. “But he noted that any conflict between the Waleses is likely to be short-lived.”
"Gilded Youth: An Intimate History of Growing Up in the Royal Family" by Tom Quinn
The royal author credits Kate’s ability to remain level headed as the reason for that: “She’s the one who will pour oil on troubled waters and go, ‘Let’s not stir things up,’” Quinn said. “Kate is an appeaser by instinct, and William always gives way,” meaning that the pair easily make up when confrontation arises in their marriage.
William and Kate are also reported to have a firm “no shouting” rule when it comes to their three children Prince George, Princess Charlotte, and Prince Louis, “and they will instead remove whichever of their kids are misbehaving from the situation and talk about whatever issue has arisen with them calmly,” The Mirror reports.