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Alleswisser Alleswisser  m , -s, - , Alleswisserin Alleswisserin  f , -, -nen 
iro know-all  (Brit) inf  (US) , know-it-all inf 

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"Collins German Dictionary, complete & unabridged, 5th edition 2004, © William Collins Sons & Co. Ltd. , 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004"