I. adjective also whacko Etymology: by alteration Date: 1975 wacky , II. noun also whacko Date: 1976 a person who is wacky
WACKO
Meaning of WACKO in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012