A word originating in South Africa. Mostly used by young people to describe something that is repulsing, disgusting, gross, revolting, etc.
"Dude, I was walking in the park and I stepped in some runny dog poo, it was so siff!"
"How can you date that girl?! She is so siff!"
"Don't pick you nose dude, it's freaking siff!"
by Boeremuisie July 9, 2013
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In Italian it means very STRONG girl who can also be very soft. It's rumored that Siffs are secretly forest spirits since they often live in the middle of nowhere and are surrounded by animals.
"Damn, who's that girl? She's like a Disney Princess with all those birds surrounding her!"
"It's obviously a Siff!"
by Anyanas June 9, 2021
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Mostly used and originated in Southern Africa. Used to signyfy something that is disguisting, putrid or grosse.
1) Crap is siff.
2) The vagrant smells siff
by Ru March 10, 2005
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background as far as i know is from Australia, possily S.A.

meaning of siff is: "as if"
"siff like slipknot"
or
"siff be a gay Brenny"(look up brenny)
by poopooman March 20, 2005
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Probably derived from the word syphilis, which is a venereal disease. Was probably first used in the military to describe anything not clean enough, such as a soldier whose hygiene was not up to scratch, or barracks which was not on inspection standard.
Jeez, that guy is a siffseun (siff boy)!

Troops! These Barracks are siff! (Normally followed by serious punishment exercises).
by Dirkltjie April 9, 2015
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Siff the South African slang word for something that is disgusting and disliked. Siff water gherkin is the disgusting water that the last gherkin sits in. The water is murky and the gherkin is wrinkled and wasting away. The word implies that someone is past the point of help and should be thrown out
Ashley stop being a siff water gherkin, you're better than that.
by Trash Panda11 May 11, 2022
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