Palatial means as grand and spacious as a palace. A palatial hotel.
It is often used with a touch of irony about somewhere merely large. The word comes from the Palatine Hill in Rome, where the emperors built.
1adjectivepalatialAs grand and spacious as a palace.
“The flat was palatial by the standards of the rest of the street.”
palatial is a quality.
Latin palatium, a palace, comes from the Palatine Hill in Rome where the imperial houses stood.
Latin
palātium — a palace
French
palatial
English, today
palatial
Borrowed from French palatial, formed from the root of Latin palātium (“a palace”), from Palātium (“Palatine Hill”).
Etymology from Wiktionary, CC BY-SA