YesSo 

an expression meaning yes, but with more enthusiasm, energy and emotion, represents complete agreement in an amicable manner. Can be used on text and in conversation.

not to be confused with "yes so"

YesSo I agree with you wholeheartedly.

YesSo by noy June 26, 2019

whomst’d’ve’ly’yaint’nt’ed’ies’s’y’es 

Literally has no meaning but,
Use whomst’d’ve’ly’yaint’nt’ed’ies’s’y’es In a sentence to confuse your friends.

Mate 1: whomst’d’ve’ly’yaint’nt’ed’ies’s’y’es has spilt my d r i n k
Mate 2: What the fuck David?

whomst’d’ve’ly’yaint’nt’ed’ies’s’y’es by BakedBeanos March 31, 2020

Yesn't 

What "no" will mean in the future?

Guy in 2025: "hey, is no still a word?"
Guy's friend in 2025: "lol yesn't".

Yesn't by IoI_xD June 6, 2018

Yesii 

Typically used in Northern England to emphasise the word yes

Person 1: oreyt, you coming out tonight?
Person 2: yesii!!

Yesii by ey_up_cocker November 30, 2010

yestin 

yestin is a new slang word for comdom

your not going up with out yestin

yestin by Mr X's September 27, 2009

Yessss 

Used when showing extreme pleasure with a result or situation.
Usually accompanied with the yessss hand motion which is the clinching of the fist and pulling back of the elbow like Tiger Woods

You jus won a million dollars.
Yessss.

Yessss by Not invented by but used profusely by Ban20 August 22, 2005

Yesh Matzav

An Israeli expression that translates to "there is situation". The meaning affirmative, like "yes", "it is possible".
"Yesh" means there is. The expression exists in the negative way. See Ein Matzav.

(a) "Will you go shopping with me?"
(B) Yesh Matzav

Yesh Matzav by Leahmor May 3, 2005