Altiloquence is a relatively uncommon word that refers to high-flown or lofty language used in a showy, ostentatious manner. There are several synonyms for this word that can be used to convey a similar meaning, including grandiloquence, bombast, pomposity, verbosity, and prolixity. These words all describe a style of speech or writing that is overly elaborate and self-important. Other synonyms for Altiloquence may include magniloquence, orotundity, and high-flown rhetoric. When used in a critical sense, these words can suggest that the speaker or writer is trying too hard to sound intelligent or sophisticated, or that they are more concerned with impressing their audience than with communicating effectively.