Noun
An erudite word, especially a Latinate or multisyllabic one; a word used by scholars, intellectuals, etc., but that is not commonly known outside of academia.
(in the plural) Boastful language.
Source: en.wiktionary.org“I don’t like to use the word squandered – that’s a big word. Source: Internet
“Impossible is a big word, but what the city has indicated is that they’re not going to be able to come together with a public-private plan,” Smith said. Source: Internet
"But they can only win the title if they beat us twice, and though it only has two letters, 'if' is a very big word." Source: Internet
That is a big word and I doubt if I will ever use it again. Source: Internet
I admit that's a big word for many folks and they don't understand what it means. Source: Internet
He sent every page back with one big word in red, circled in red ink, on the first page: BULLSHIT. Source: Internet