speaking or expressed in a lofty or grandiose style; pompous; bombastic; boastful.
Origin: 1650–60; back formation from L magniloquentia elevated language, equiv. to magniloqu(us) speaking grandly (magni-magni-+ loqu(ī) to speak + -us adj. suffix) + -entia-ence
mag·nil·o·quent (māg-nĭl'ə-kwənt) adj. Lofty and extravagant in speech; grandiloquent.
[Back formation from magniloquence, grandiloquence, from Latin magniloquentia : magnus, great; see meg- in Indo-European roots + loquēns, loquent-, present participle of loquī, to speak; see tolkw- in Indo-European roots.] mag·nil'o·quence n., mag·nil'o·quent·ly adv.
1623, from L. magniloquentia "lofty style of language," from magnus "great" (see magnate) + loquentem (nom. loquens) "speaking," prp. of loqui "speak."