[wacky] adj wack.i.er ; -est [perh. fr. E dial. whacky fool] (ca. 1935): absurdly or amusingly eccentric or irrational: crazy -- wack.i.ly adv -- wack.i.ness n
WACKY
Meaning of WACKY in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012