Is there a word for people who use long and unnecessary words to make themselves sound smarter?

Question

I want to call a friend on their bull ****. Its like in a movie when the geek rattles off about some new invention in techno-babble and the hero looks perplexed through all of this then he replies "can you tell me in english?". Well, my friend is like the geek but he does it only around other people to make himself sound cooler. So, any word like the one above?

Answer 1

Stupid...

Cocky...

Conceited...

Hehe... ; )

Answer 2

verbose= pleonasm== Using more words than necessary " a verbose speaker."

Answer 3

Possibly conceited if he is doing it not because he thinks he's helping but because he's showing off. Or even arrogant.

Answer 4

sesquipedalian

Answer 5

Hahaha! That's really clever. Sorry, I have no idea.

Answer 6

Pretentious. Ugh, that's annoying. But it really comes from insecurity, so maybe have pity on him. He secretly feels dumb.