Synonyms for Grandiloquent:

adj.

all (adjective)
tall, magniloquent.
exaggerated (adjective)
inflated.
ostentatious (adjective)
blatant, boastful, vain, snazzy, exhibitionistic, garish, ornate, splashy, sensational, forced, flamboyant, pompous, opulent, showy, shameless, affected, formal, gaudy, grandiose, flagrant, fussy, Flaunting, rakish, ostentatious, flashy, jaunty, dashing, flourishing, histrionic, dramatic, stilted.
pretentious (adjective)
pretentious.
pretentious, flowery (communication) (adjective)
aureate, histrionic, bombastic, orotund, declamatory, overblown, pompous, rhetorical, windy, high-flown, verbose, inflated, fustian, swollen, magniloquent, sonorous, oratorical.
verbose (adjective)
talkative, wordy, profuse, chatty, garrulous, verbose, voluble, loquacious, bombastic, windy, effusive.
wordy (adjective)
featherbedding, bombastic, superfluous, verbose, endless, wandering, loquacious, windy, chatty, talkative, lengthy, excessive, ponderous, wordy, long-winded, rambling.

n.

diffuse, crisp, discursive, conversational, economical, circuitous, articulate, clean. grandiloquent (noun)
pretentious, portentous, rhetorical, pontifical, tall, overblown, magniloquent, pompous.
pompous (noun)
study at bombastic, oratorical.

Other synonyms:

orotund, aureate. sonorous. declamatory. extravagant
high-flown.
rhetorical
oratorical.
Other relevant words:
clean, diffuse, articulate, pontifical, economical, swollen, aureate, portentous, discursive, pretentious, circuitous, declamatory, oratorical, magniloquent, crisp, style, words, fustian, conversational, tall, overblown, sonorous, orotund, high-flown.

Usage examples for grandiloquent

  1. In the depth of mortal anguish, or at the climax of human joy, we do not use a grandiloquent and incomprehensible phraseology. – Mushrooms on the Moor by Frank Boreham
  2. This young woman displayed more courage, more enthusiasm, more wit, to be sure also more precise knowledge of Judaism, than thousands of men of our time, young and old, who fancy grandiloquent periods sufficient to solve the great religious problems perplexing mankind. – Jewish Literature and Other Essays by Gustav Karpeles
  3. The ever- kind Landor praised the preface very much, and delighted my mother by his grandiloquent announcement that it was " quite worthy of Addison!" – Story of My Life, volumes 1-3 by Augustus J. C. Hare