15 words that will make you sound smart!

1. Sesquipedalian (ses⋅qui⋅pe⋅da⋅li⋅an) - adjective: using long words: characterized by the use of long words
2. Plenipotentiary (plen⋅i⋅po⋅ten⋅ti⋅ar⋅y) - noun: Having full power: invested with complete authority to act independently
3. Nudiustertian (nu⋅di⋅us⋅ter⋅tian) - adjective: The day before yesterday
4. Charientism (char·i·en·tis·m) - noun: A figure of speech wherein a taunting expression is softened by a jest; an insult veiled in grace.
5. Obfuscate (ob·fus·cate) - verb: To confuse, bewilder or stupefy.
6. Vicissitude (vi⋅cis⋅si⋅tude) - noun: Regular change or succession from one thing to another.
7. Heliolatry (he·li·ol·a·try) To worship the sun.
8. Facetious (fa·ce·tious) - adjective: Intended to be humorous but often silly or inappropriate. *The only word in the English language to have all the vowels in order.
9. Autochthonous (au·toch·tho·nous) - adjective: Formed or originating in the place where found.
10. Oscitant (os·ci·tant ) - adjective: Drowsy or inattentive.
11. Perseverate (per·sev·er·ate) - verb: To repeat something insistently or redundantly.
12. Logomachy (lo·gom·a·chy) - noun: An argument marked by the reckless or incorrect use of words.
13. Defenestrate (de·fen·es·trate) - verb: To throw something or somebody out of a window.
14. Pandiculation (pan⋅dic⋅u⋅la⋅tion) - noun:  The act of streching and yawning.
15. Blatherskite (blath⋅er⋅skite) - noun: talkative person: somebody who enjoys silly or unimportant chat.