An example of bloviate is for a person to give a lengthy speech about how great he is.
Origin of bloviate; from uncertain or unknown; perhaps
intransitive verbblo·vi·at·ed, blo·vi·at·ing, blo·vi·ates Slang
Origin of bloviateMock-Latinate formation, from blow1.
(third-person singular simple present bloviates, present participle bloviating, simple past and past participle bloviated)
Particularly used of politicians, bloviate has passed in and out of fashion over the centuries, falling out of fashion by end of 19th century, but was popularized in the early 1920s with reference to president Warren G. Harding, and again in the 1990s and then 2000 presidential election, and is currently in popular use.