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100% sure of it. Without a doubt. This slang is mostly used in Australia.
Babe Ruth is a deadset legend.
Deadset by Puzant December 9, 2003
Words you can keep
Deadset is an Australian slang term for being serious.
Derives from the Phrase “I’m serious “

Meaning to be serious.
Mate deadset I will pay you back”

By Isaac
Deadset by Mr_Fitz February 20, 2018
Predoninantly Aussie slang, used to enforce the certainty of ones opinion.
Often used to enchance harsh assessments of the character of others.
Dave: "That guy over there is my new boss. He is a fuckwit".
Robbo: "That bloke? He looks like a deadset fuckwit to me".
Deadset by Jas the Aussie March 22, 2009
Australian slang, meaning 100% true, and legit
Michael Jordan is deadset the greatest basketball player I’ve ever seen
Deadset by bung up August 22, 2018
The word used to describe the kind of scene of total and utter desolation, desomation and isolation. Usually uttered to either oneself or to a friend upon the arrival to a party that noone went to/everyone has already been to a totaled the place.

Taken from the British TV drama Deadset, in which the cast find themselves alone in the middle of a post-apocolyptic wasteland dressed in drag and not nearly crunk enough.
"Ah man, Jas' party was a total deadset, no drink, no drugs and nobody even showed up."
"Didn't stop you from projectile vomiting and stealing a TV though did it?"
"Heeeell no."
Deadset by KEEPING December 22, 2008

Deadset gee up 

A phrase used in some parts of Australia by Bogans that watch Rugby League.

example;

a)Hey do you know Souths beat Brisbane?
b)No way! Did they?
a)Of course not.
b) That's a deadset gee up, that'll do me.
Deadset gee up by Jango Fett August 6, 2006

Deadset fuckwit 

Not only a fuckwit. A massive fuckwit. Powerfully offensive term. Normally they are extremely hard work to be around. You weighed have to remove yourself from their company or knock them out.
‘That guy singing about short people and picking his nose was a deadset fuckwit. About time someone punched him in the face.’
Deadset fuckwit by adirtyword September 4, 2020
More from Urban Dictionary
(Ewokese) Freedom!
And dying in yo' bed many years from now, would ya be willing ta trade all da days from dis here day ta dat fo' one chance, just one chance, ta come back here as young men an' tell our enemies dat dey may take our lives but dey will never take our freedom ... YUB NUB!
yub nub by rotjrem November 4, 2010
Word of the Day on September 4, 2026
1. Meaning nasty, sexy, filthy. Popularized by Christina Aguilera.

2. Used usally as a close friend in hip-hop slang.
1. Wanna get dirrty
It's about time that I came to start the party Sweat drippin' over my body
Dancin' gettin' just a little naughty

2. Sup Dirrty? Haven't seen you in a while.
dirrty by Minty November 30, 2003
Word of the Day on September 3, 2026
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