Words I don't relly know ...want to use more often .

Bamboozled: to be cheated or deceived
Frivolous : lacking in seriousness ,of little weight or importance.
pre·rog·a·tive =official right.
Comely : attractive .
Cornucopia: overflowing supply of something or an abundance.
Pretentious: making ridiculous claims
Seditous: trying to stir up a revolt against an authority figure
Nuance: slight degree; shade of difference
Disdain: a feeling of scorn or contempt
Acquiescent: reluctantly agreeable
Fervor: strong passion
Jubilant: filled with joy
Slough: discard; cast off
Trepidation: fear
Undulate: move in a wavy manner
Vapid: dull; boring
Garrulous: very talkative
Decadence: moral decay or decline
Irascible: easily angered
Reticent: quiet
Extol: Praise
Serene =Peaceful ,calm and Unruffled.
Obdurate: stubborn
Pompous: arrogant; obnoxiously proud
Glib: smooth-talking
Staunch: standing firm; solidly loyal
Impugn: to attack with words
Nebulous: unclear; vague
Admonish: to warn or scold, but in a caring way
Flippancy: treating a serious situation with arrogant humor or direspect
Prevalent: widley-accepted; common
Stymie: block; get in the way
Delineate: to explain or describe in detail
Innocuous: harmless
Complacent: self satisfied
Deride: make fun of; ridicule
Hiatus: gap; interruption
Indolatry: the worship of objects or people as gods
Obdurate: stubborn
Petulance: grouchiness
Rudimentary: undeveloped; elementary
Terse: of few words; to the point
Foment: to stir into action
Fickle: lacking loyalty; unpredictably changeable
Belie: to gave an impression that is the opposite of the way things really are
Indolent: lazy
Quell: calm; pacify
Sycophant: someone who flatters in order to gain favor
Xenophobia: the fear of hatred of anything foreign

(I will add more words if i come across one [:d].)