Question: what are some big words to sound smart?
Answer: Your Vocabulary Can Make You Sound Smart. Why use a simple 25-cents word when you can use an impressive $20 word? ... 
Elucidate. Elucidate [elu·ci·date] – to explain or make something clear. ... 
Malaise. ... 
Non sequitur. ... 
Obfuscate. ... 
Perfunctory. ... 
Quid Pro Quo. ... 
Scintillating.