The Collaborative International Dictionary
Altiloquent
Altiloquent \Al*til"o*quent\, a. [L. altus (adv. alte) high +
loquens, p. pr. of loqui to speak.]
High-sounding; pompous in speech. [R.]
--Bailey.
Wiktionary
altiloquent
a. pompous, or pretentious in speech