grandiloquence(n = noun.communication) grandiosity, magniloquence, ornateness, rhetoric - high-flown style; excessive use of verbal ornamentation; "the grandiosity of his prose"; "an excessive ornateness of language"
is a kind of expressive style, style
has particulars: flourish, blah, bombast, claptrap, fustian, rant
Derived form adjective grandiloquent₁

   The use of lofty words or phrases; bombast; -- usually in a bad sense. [1913 Webster]
"The sin of grandiloquence or tall talking." [1913 Webster]

N  speech, faculty of speech, locution, talk, parlance, verbal intercourse, prolation, oral communication, word of mouth, parole, palaver, prattle, effusion, oration, recitation, delivery, say, speech, lecture, harangue, sermon, tirade, formal speech, peroration, speechifying, soliloquy, allocution, conversation, salutatory : screed: valedictory, oratory, elocution, eloquence, rhetoric, declamation, grandiloquence, multiloquence, burst of eloquence, facundity, flow of words, command of words, command of language, copia verborum, power of speech, gift of the gab, usus loquendi, speaker, spokesman, prolocutor, interlocutor, mouthpiece, Hermes, orator, oratrix, oratress, Demosthenes, Cicero, rhetorician, stump orator, platform orator, speechmaker, patterer, improvisatore, speaking, spoken, oral, lingual, phonetic, not written, unwritten, outspoken, eloquent, elocutionary, oratorical, rhetorical, declamatory, grandiloquent, talkative, Ciceronian, nuncupative, Tullian, orally, by word of mouth, viva voce, from the lips of, quoth he, said he, action is eloquence, pour the full tide of eloquence along, she speaks poignards and every word stabs, speech is but broken light upon the depth of the u, to try thy eloquence now 'tis time.