- Also wack. an eccentric, strange, or odd person.
Origin of wacko
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for wacko
At first this plays like some sort of bizarre SNL sketch: the wacko physician.Why Is Louis C.K. So Funny? He Uses Humor as a Moral Compass.
May 2, 2014
McCain called Cruz a “wacko bird” and later took it back, about as insincerely as possible.Why the GOP Needs a Return to the Bush Leagues
April 21, 2014
The hysteria and hostage taking of Wacko Bird Inc. is not reasonably matched to the current situation.
The GOP “suicide caucus”, led by proud “wacko bird” Sen. Ted Cruz, was, not surprisingly, spawned from a faulty premise.
In a country where six of 10 voters already think the government is too big, the wacko bird caucus has got a lot of room to fly.Ted Cruz Might Just Have Won the Future for the GOP
September 25, 2013
- mad or eccentric
- a mad or eccentric person
C20: back formation from wacky
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for wacko
extended form of wack, recorded from 1977.
Online Etymology Dictionary, © 2010 Douglas Harper