mostregal
adjectiveUK /ˌməʊstˈriːɡəl/
US /ˌmoʊstˈriːɡəl/
The most like a king or queen.
She wore her mostregal dress to the party.
OTHER MEANINGS
2. The fanciest or most splendid of all.
That was the mostregal cake at the fair.
3. Showing the most dignity and calm.
He gave a mostregal bow to the guests.
4. The best or highest in rank.
The mostregal seat was saved for the queen.