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Acronym that stands for "Weekend Of No Inhibitions". WONI is a state-of-mind one must undertake during extremely fun "friend only" weekends (Note: If significant others are involved then achieving the appropriate state-of-mind is virtually impossible). Pronounced as follows - wah-nee.

"WONI" can also be used to describe an extremely entertaining all-weekend event or a person's particularly fun behavior at said event.
ENTERTAINING ALL-WEEKEND EVENT
Guy 1: This bachelor party is gonna be awesome. We are gonna drink a ridiculous amount of booze, dominate the Blackjack tables and make it rain at the titters.
Guy 2: No doubt. This weekend is gonna be WONI.

PERSON'S BEHAVIOR AT EVENT
Guy 1: Did you see Tommy take three shots of tequila and then make out with some random girl, all while getting a lap dance from some Russian stripper?
Guy 2: Yeah, that was so WONI.
WONI by mandingo0218 October 15, 2008
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WONI can best be described as the two sweetest people in the world. They are meant to be as one. Walker and Toni are WONI. The one and only. #couplegoals
Did you see WONI at the prom? Yeah, like they lit the room up.
WONI by Zippy January 7, 2017
Related Words
Taste in someones mouth after smoking weed and eating onion flavored pretzels at the same time.
Mara: "sup?"
Flo: "nuffin, just have that awkward taste of weed and onion in my mouth."
Mara: "wonion, eh?"
wonion by bavizzle December 17, 2008
wonivek is a staffy
wonivek by woniveks July 14, 2009

Kayla Wonisch 

Is the definition of Bitchin, Hotness, and mainly kicks some serious ass. Can found at Jonas brother concerts, backstage, and listening to the Beatles.
Person 1: Did you see that girl?

Person 2 : Hell yeah, she is soooo a Kayla Wonisch. That girl can kick some ass!
Kayla Wonisch by SuggaDaddyV June 28, 2009

Wonitwem 

The most hideous monstrosity the seven hells has unleashed upon this world to consume us all and send our souls straight to hell to be Satan's urinal. An insult from the Twi language, but a greeting in Atlantic Hall.
Me: Yo! Ninja, send me money.
Ninja: Wonitwem
Wonitwem by Wontumi December 27, 2019
Wonights gonna get wicked >:)
Wonight by Tealer4life February 9, 2023