siefert 

sensitive, compassionate, understanding, reasonable

after saving the kitten from the tree the people commented that it was a real siefert kind of thing.

siefert by smij.com October 4, 2010

Siefer Math 

The math used to determine whether or not Outbound is up or down on cases.

Utilizing Siefer Math, Outbound cases are up 1,738 even though carton length was 25-inches with Scotts on three lines and big Sterilite on the other with tile and four-foot Philips coming through CCS.

Siefer Math by LLD-NLD-4419 June 22, 2018

Spefert 

Sean's form of the word "perfect" when hes had too much beer and wine.

Sean's Mom - "Hey honey. How was Timmy's birthday party?"

Sean - "It was Spefert, maaaaan."

Sean's Mom - "What did you say?"

Sean - "It was Speferrrrrrt."

Sean's Mom - "You're fucked now, bitch. Bend over."

Sean - "Oh. Spefert"

Spefert by DylanIsATallRetard August 7, 2009

siewert 

one who is amazing,nice,crazy,and full of life.

of course beautiful and everyone wishes they had one.

also, they are light skinned and is talented

That must be a Siewert!

siewert by Marrisa February 22, 2008

Seifert 

Being majorly pompous and unusually full of yourself, this word is common around the Jersey Shore. No one is sure of the origins.

The drum major at school was acting pretty seifert on Friday night. He thought he was something special.

Seifert by OCnDT July 24, 2007

Siebert 

A small, hairy penis, usually a chode.

Woah he has a Siebert, Fail.

Siebert by Doctajsnap April 25, 2010

Siebert 

(v.) synonym for exaculate; to release sperm

"I'M SIEBERTING!", he screamed trying to pull out.

Siebert by Anonymous2414 November 5, 2014