listen to the pronunciation of wacko
İngilizce - İngilizce

Wacko! There's a whole pile of letters for me, Jennings cried excitedly, hopping from one foot to the other.

amusingly eccentric or irrational
An amusingly eccentric or irrational person
{i} crazy person, lunatic, insane person (Slang)
disapproval If you say that someone is wacko, you are saying in an unkind way that they are strange and eccentric. Lampley was obviously completely wacko. = mad. wackos a crazy or strange person
a person who is regarded as eccentric or mad
plural of wacko