SED 

Socially emotionally disturbed
Seriously emotionally disturbed

Yo that dude is SED.

SED by KY4AP August 29, 2007

Sed 

The sadest of all sads

"Bro that's so Sed"
"what the actual fuck did you just say?"

Sed by The Redness January 12, 2020

Sed 

A Sed is a person who tries too hard and doesn’t give up easily
Usually used in the video game Hyper Scape
Is used as an alternative to a ‘sweat’
Is a shortened version of ‘sedulous’

‘bro, this game sucks there’s too many seds’

Sed by AltoKe August 23, 2020

sed 

Series End Depression

The feeling of sadness one gets when they've finished watching a season or series.

"I finished Breaking Bad last night and I’m so bummed. I’m so sed."

Molly was feeling great sedness after binge watching all of Scandal. “I can’t believe it’s over.”

sed by TheBasicDad October 7, 2020

SED 

Suck elephant dick

Person 1: Stfu bitch
Person 2: SED you fat cunt
Person 1: Damn...i cant handle that
Person 2: Knowing your slut ass, you will handle it no problem

SED by AnonymousXIX July 17, 2016

SED 

Ancient Unix tool commonly used for simple string replacements. Abbreviation of "Stream EDitor".

See also: s/

command: echo "test foo blah" | sed -e 's/foo/bar/'
output: test bar blah

SED by DJMoses May 27, 2009

sed 

im chat..short for said, like "he said", "she said"...sez

he sed..., she sed..., we sed..., you sed...

sed by blthrskt December 29, 2005