maladroit: (adjective) clumsy; uncoordinated

fractious: (adjective) unruly, likely to cause disturbance or trouble

flagitious: (adjective) shamefully wicked; a particularly heinous event

meretricious: (adjective) attracting attention by vulgar, trashy means; false or insincere

perspicuous: (adjective) clear and easy to understand, generally in regard to speech or writing

pusillanimous: (adjective) cowardly, profoundly lacking in noble qualities of courage and valor

grandeur: (noun) the quality of being grand or maginficent

apophenia: (noun) finding meaning or patterns where none exist

Thanks to sirgrumpygills for this submission!

sesquipedalian: (adjective) using long words