ceremonious
🇺🇸
/ˌserəˈməʊniəs/
🇬🇧
/ˌserəˈməʊniəs/
done with a lot of ceremony or in a formal way
The graduation ceremony was very ceremonious, with everyone dressed in formal attire.
畢業典禮非常隆重,每個人都穿著正式服裝。