pretentious (adj) - trying to appear more important, intelligent, or cultured than you really are [pri-ten-shuhs]
BREAKDOWN: PRE- (before) + TENS- (stretch) + -IOUS (full of)
pretension is ostentatiousness or snobbery; a claim or assertion, often dubious
unpretentious means authentic or modest; free of ostentation or affectation
See also: tendentious
“People need realness, reality. People can sense when someone is being pretentious or fake. It's because you feel it; you see it in someone's body language.” —Afrojack