adjective, wack·i·er, wack·i·est. Slang.
Related formswack·i·ly, adverbwack·i·ness, noun
Examples from the Web for wacky
Washington, a truly masterful storyteller, grew up in what he calls “a wacky cult”—the Worldwide Church of God.
The actor showed tremendous range in the role, bouncing between his wacky stand-up persona and gentler dramatic work.Robin Williams's Greatest Moments on Stage and Screen (Video)|The Daily Beast Video|August 12, 2014|DAILY BEAST
The onus is on one man to hold this wacky goulash of punditry together: Mike Tirico.
The man who holds ABC/ESPN's wacky goulash of World Cup punditry together strikes viewers as a paragon of congeniality.
The two wacky candidates combined for just over 5% of the vote with Brown pulling 3.3% and Bayes at 1.8%.Who Voted For Idaho's Weirdo Candidates For Governor?|Ben Jacobs|May 21, 2014|DAILY BEAST
The two biggest one give the old man two wacky, one each, an' the little one wouldn' give any.Jamaican Song and Story|Walter Jekyll
If Jerry started for the swamp at this time of night he must be wacky!Swamp Island|Mildred A. Wirt