Akademik

an intellectual who is ostentatiously and irritatingly knowledgeable

clever clogs or clever dick noun (slang)

A person who thinks himself or herself clever

Main Entry: ↑clever

clever clogs UK US noun [countable] [singular clever clogs plural clever clogs] british informal

someone who is annoying because they are always right or because they think they are more intelligent than everyone else

Thesaurus: someone who is intelligent or well informed_hyponym words used to describe intelligent or wise people_synonym

Variant: clever dick

ˈclever Dick [clever Dick clever Dicks] (also ˈclever clogs) noun (both BrE, informal, disapproving)

a person who thinks they are always right or that they know everything