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8.
1.cool, sick
2. peng, fit, hot
Girl 1 - Gurrrrrl that shirt is septic!
Girl 2 - Thanks honey, you're looking pretty septic yourself
by anon48483229jj December 01, 2010
3 22
 
1.
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
413 168
 
2.
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
249 83
 
3.
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
161 85
 
4.
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
195 162
 
5.
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
17 21
 
6.
Emily Suzanna Koelle is the definition of a septic
Emily Suzanna Koelle is a septic
by Colin Mallon January 26, 2011
7 19
 
7.
An adjective denoting the categorical suckiness of anything considered; a direct antithesis and negative reaction to the popularization and ubiquity of the word "epic" which is normally applied to anything that is considered awe-inspiring, breath taking, illuminating, etc.
2Pac - Heard that new Lil' Wayne joint?
Bigge - Yeah, that shit was septic. It really sucked.
by Craig an' Nem February 19, 2011
3 20