high·fa·lu·tin
adjective/ˌhaɪfəˈluːtɪn/
/ˌhaɪfəˈluːtɪn/
(informal)- trying to be serious or important, but in a way that often appears silly and unnecessary
synonym pretentious装模作样的;浮夸的;做作的 - highfalutin language
冠冕堂皇的语言
Word Originmid 19th cent. (originally US): perhaps from high + fluting (present participle of flute). - highfalutin language