• WordNet 3.6
    • adj wacky informal or slang terms for mentally irregular "it used to drive my husband balmy"
    • adj wacky ludicrous, foolish "gave me a cockamamie reason for not going","wore a goofy hat","a silly idea","some wacky plan for selling more books"
    • ***
Webster's Revised Unabridged Dictionary
    • n Wacky (Geol) A soft, earthy, dark-colored rock or clay derived from the alteration of basalt.
    • ***


Webster's Revised Unabridged Dictionary
G. wacke, MHG. wacke, a large stone, OHG. waggo, a pebble


In literature:

I had a modem, and on occasion I'd logged on to Illuminati, which always looked entertainly wacky, but certainly harmless enough.
"Hacker Crackdown" by Bruce Sterling
But when I saw those Connie prisoners, I knew there was more to this than just a young space pup going vack-wacky.
"Rip Foster in Ride the Gray Planet" by Harold Leland Goodwin
You must be wacky, mister!
"Sabotage in Space" by Carey Rockwell
The station and all its wacky inhabitants.
"Security" by Poul William Anderson
It took him half an hour to devise a completely wacky and unorthodox way of hitting the holes in the enemy advance.
"The Highest Treason" by Randall Garrett
I have a little sister named Henrietta, but we call her "Wackie," because when she cries she goes "Wackie, wackie, wackie!
"St. Nicholas Magazine for Boys and Girls, Vol. V, August, 1878, No 10." by Various
Have you gone wacky on me?
"The Lost Warship" by Robert Moore Williams
Dem go go pick wacky.
"Jamaican Song and Story" by Walter Jekyll

In news:

Looking like a blonde version of Cousin It, the wacky wardrobe choice landed her the Worst Dressed of the Day title.
From haunted walks through the woods to wacky events for young children, there are plenty of Halloween activities in the coming days.
The wacky world of advertising.
YouTube gives wacky anchorman Philip DeFranco greater exposure.
Rick's Zany Facts & Wacky News.
The late Dizzy Dean, a Hall of Fame baseball player and television's first wacky sports analyst, was fond of saying he "should have stood in bed" after bad pitching performances.
Frankly, no one knows what those wacky folks in Congress will do.
Chill Out With the Royal Wedding Fridge And Other Wacky Memorabilia.
Chill Out With the Royal Wedding Fridge And Other Wacky Memorabilia F*** The Royal Wedding Tees.
Kelly thinks so — and says he's working to bring the wacky characters and plotlines in his even wackier Trapped in.
I did something wacky the other day.
I guess I'm not that wacky.
SAP Co-CEO Explains Cloud Plan, 'Wacky' Hana.
These scarecrows , which will be used to decorate the Downtown Marion Historic District, can be "wacky, fun, cute, themed, sparkly or spooky.".

In science:

We show in various contexts that the dynamics of generic continuous maps are indeed also very pathological (weird or wacky or, sometimes, even wicked – see Definition 3.4 below) when viewed from this ergodic perspective.
Ergodic theory of generic continuous maps
It is not obvious, but true, that every wicked system is wacky.
Ergodic theory of generic continuous maps
In particular, his example proves that there are systems that are wicked but not wacky.
Ergodic theory of generic continuous maps