A person who behaves in an irritatingly smug or arrogant fashion, typically by making clever remarks and displaying their knowledge.
- The wisenheimers who paid no respects to such dolts did not get us into this mess - straight-faced true believers of all stripes did.
- It was always tempting to try and prove that one was enough of a wisenheimer oneself to appreciate anything they could dish out.
Early 20th century: from wise1 + the suffix -(n)heimer found in surnames such as Oppenheimer.
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