roy ‧ al ‧ ist /ˈrɔɪələst, ˈrɔɪəlɪst/ BrE AmE noun [countable]
[ Word Family: noun : ↑ royal , ↑ royalist , ↑ royalty ; adjective : ↑ royal , ↑ royalist ; adverb : ↑ royally ]
someone who supports their country’s king or queen, or believes that a country should be ruled by kings or queens OPP republican
—royalist adjective