0 a person whose behaviour is strange and different from that of most people
1 a person whose behavior is strange
Jan is always the one who has to clean up all the messes that people cause, no matter how wacko it is.
He was ashamed of those wackos.
She explains that he's a wacko, and that he treated her poorly when she rebuffed his advances.
Limbaugh has used the term environmentalist wacko when referring to left-leaning environmental advocates.
The mascot that is the least offensive to an environmentalist wacko is the projected winner.
