swear down 

A statement made to signify that what you speak is 100% the truth, the whole truth and nothing but the truth. Usually used when someone doesn't believe what you say, as it is bullshit, but this is used to try and make that person believe its true as its probably not.

What it actually means may derive from the old saying of "I swear on my mum's life!" which means absolutely nothing but some people think if that statement is said that they can't be lying.

"I swear down your honour, i didn't do it"

Nick: Did you know that Ahmed got arrested last night?
Keane: No he didn't.
Nick: Yeah man, swear down.

swear down by GF November 30, 2006

Swear down 

Expression used when you tell an unbelievable story that is in fact very true.

My little brother is addicted to violent violent games, swear down, I smashed his xbox in front of him.

Swear down by Billy-Soo October 7, 2019

Swear down 

A phrase used to imply that one is telling the truth.

That gash is bare buff yeah. She was all over me n tingz swear down.

Swear down by Alvin Monero February 7, 2008

Swear down 

meaning that you are being very honest about something.

todd -"A' fuckin Swear Down right, shut the fuck up, ya doin ma head in."

Swear down by fresh prince of bellend April 14, 2009

swear down 

originating from chavs and pikeys in Ashford, UK.

Means to promise greatly to do something

i swear down I'm gona kill ya

swear down by Ryk Turner January 22, 2005

I swear down mate 

When a Geordie is angry they say this

"I swear down mate I'll punch you!"

I swear down mate by Big mugger June 20, 2022

I swear down on my nan’s grave 

Popular statement frequently used by Formula 1 YouTuber Rocketpoweredmohawk. Used to express to swear on something or used as a general indication of anger/frustration

“If Max Verstappen wins the next race and gets his 50th win in a row, I swear down on my nan’s grave, I will be very disappointed”.

I swear down on my nan’s grave by 69ReasonsWhy April 1, 2024