Dictionary.com
Thesaurus.com

wack job

American  
[wak job] / ˈwæk ˌdʒɒb /
whack job

noun

Slang.
  1. an odd, irrational, or unconventional person; wack; wacko.

    I can't imagine why they hired that new line supervisor—he's a total wack job.


Etymology

Origin of wack job

First recorded in 1975–80 in spelling whack job

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

When words and phrases like "wack job," "mentally deranged" and "dotard" are exchanged, it's no surprise the U.S. and North Korea aren't allies.

From Fox News • Feb. 12, 2020

Grandma is, to put it politely, a wack job, although she has good reason.

From New York Times • Feb. 27, 2010

I’m not one of those woo-woo people or a wack job.

From "Lawn Boy" by Gary Paulsen