1. pompous or extravagant in language, style, or manner; characterized by high-sounding words and grandiose expression
The politician's grandiloquent speech was full of empty promises and flowery language.
O discurso grandiloquente do político estava cheio de promessas vazias e linguagem florida.
2. lofty and impressive in appearance or style, but often without substance
He delivered his ideas in a grandiloquent manner that impressed the audience but lacked clarity.
Ele apresentou suas ideias de forma grandiloquente que impressionou o público, mas caregia de clareza.