high-flown rhetoric

Translations
высокопарная риторика
The politician's high-flown rhetoric did not convince the skeptical voters.
Высокопарная риторика политика не убедила скептически настроенных избирателей.
Definitions
High-flown rhetoric refers to language that is overly elaborate, grandiose, or pretentious, often used to impress or persuade an audience but may lack substance or clarity.