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A know-it-all or know-all is a person who obnoxiously purports an expansive comprehension of a topic and/or situation when in reality, his/her comprehension is inaccurate or limited. This display may or may not be directly expressed.
The German word Besserwisser is also used in some languages, literally meaning "better knower".
- Marion Ledwig (2008). "Inconsistencies in the Christian Tradition II: The Paradoxes of Onmipotence and Omniscience". God's Rational Warriors. ontos verlag. p. 201. ISBN 9783938793879.
- Marilyn Pincus (2004). "The Know-It-All". Managing difficult people: a survival guide for handling any employee (2nd ed.). Adams Media. pp. 75–86. ISBN 9781593371869.
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