wacko definition, wacko meaning | English dictionary

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wacko

  

Informal  
      adj  
1    mad or eccentric  
      n   pl   , wackos  
2    a mad or eccentric person  
     (C20: back formation from wacky)  
English Collins Dictionary - English Definition & Thesaurus  
See also:

wack, wacke, wacky, wacker

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