sesquipedalian

nouns

a very long word (a foot and a half long)

given to the overuse of long words

"sesquipedalian orators"; "this sesquipedalian way of saying one has no money"

sesquipedalian

is derived from

is similar to

making claim to or creating an appearance of (often undeserved) importance or distinction

"a pretentious country house"; "a pretentious fraud"; "a pretentious scholarly edition"

(of words) long and ponderous; having many syllables

"sesquipedalian technical terms"

is derived from