Septic is rhyming slang for american.

Septic is short for septic tank, which rhymes with yank....

So If you say you are anti septic, it means you are anti american!
My mate barry is an anti septic!
by Ellie November 30, 2003

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Top Definition
Cockney ryhming slang for a yank (american). The whole phrase is 'Septic Tank' - but as with most cockney ryhming slang the first word is used only. The reason for the link is that, like a septic tank nobody likes a filthy stinking american!!!
What are you fucking shooting at me for you filthy fucking septic cunt, im on your side!!!!
by Stan February 18, 2004

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An American. Ryhming slang "yank" = "septic tank"
Used a lot in the London financial markets.
The septics sit in the big glass offices and do nothing.
by Crouchy April 01, 2003

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Yanks.

The kind of idiot who votes a thumbs down to a perfectly good slang word definition, just because they havent heard it in their neck of the woods, and probably has a brother called "Troy" or some such nonsense. You know who you are, you mugs!
Who voted a thumbs down to my defition of "mug"?

Probably some idiot septic!
by Kent Paul September 26, 2006

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Adjective :
Slang-
.To do something that effects many people in a negative way.

.to cause a sorrow, anger, or confusion in a way that ot causes a chain reaction

.intend to create comotion

.to be intoxicated to the point of sweating the alcohol through your skin or becomong very ill
She is so septic I could no longer be her friend.

My septic roomate ruined my couch lastnight.

His actions were so septic she wanted to leave town.
by Cort's Aunt Ella November 25, 2015

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Affectionate name used by Glasgow Rangers to call their city rivals Glasgow Celtic.
I see The Mighty Gers pumped Septic 3-0 at the weekend again!!
by bigbluenosebear March 25, 2011

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Emily Suzanna Koelle is the definition of a septic
Emily Suzanna Koelle is a septic
by Colin Mallon January 26, 2011

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