The phrase "a royal function" is correct and usable in written English.
It can be used to refer to an event or duty that is associated with royalty or performed by a member of a royal family.
Example: "The gala dinner was a royal function attended by dignitaries from around the world."
Alternatives: "a royal event" or "a royal occasion".
At one royal function, Ken noticed a seemingly bored Princess Margaret tapping her foot to the rhythm of the background music and, ignoring protocol, he asked the Princess if she would like to dance.
Dress like the last royal function you went to, with tiaras".
The first ever Writers' Bloc gig was 'Strange Stories for Samhuin', held on 31 October 2001 at the Cafe Royal function rooms (now the Voodoo Rooms).
Foreign Minister Hossein Fatemi indicated that the Government was considering the formation of a Regency Council to carry out the royal functions.
The king has been in a hospital since September, suffering from a lung infection and other ailments, and has carried out some royal functions there.
The monarchy, through its participation in royal functions, state ceremonies, and popular festivals, plays an important role in nurturing and preserving this heritage.
Urdangarin's biography was pulled down from the royal website and he was banned from royal functions.
Polonaise, Polish polonez, in dance, dignified ceremonial dance that from the 17th to 19th century often opened court balls and other royal functions.
Consistently urging the supremacy of Rome, he fully endorsed the papal inheritance of sacerdotal and royal functions as conferred by Christ on St. Peter and the delegation of temporal power to the emperor for the protection of the church.
Framed in 1937 legislation but originally formulated in the Regency Act, after George III finally went mad in 1811, it allows for the lord chancellor – currently Michael Gove – the Speaker of the Commons, the lord chief justice and the master of the rolls to step in if "by reason of infirmity of mind or body the Sovereign is incapable for the time being of performing the royal functions".
