C16: from Latin grandiloquus, from grandis great + loquī to speak
grandiloquent for learners of EnglishPowered by COBUILD (grændɪləkwənt)
graded adjective & adjective
Grandiloquent language or behaviour is very formal, literary, or exaggerated, and is used by people when they want to seem important. [formal, disapproval] ⇒ She attacked her colleagues for indulging in 'grandiose and grandiloquent language'.
At least that was the grandiloquent way he put it when self-doubt crept in.Ruell, Patrick THE ONLY GAME"It was the perfectsetting in which to effect a grandentrance - a grandiloquent gesture to capture the attention of the freneticton.Stephanie Laurens ON A WILD NIGHT