Yeppi 

It’s mean yeppeo + happy = yeppi

The term popularized by æspa

Yeppi you gonna love,
Yeppi you gonna looove~
Yeppi yeppi happy virus

Yeppi by Granger2410 February 13, 2022

Yeppi 

happy and pretty. it appeared in aespa's YEPPI YEPPI

Karina: i am so yeppi!!!!!
Ningning: yeaaaahh i agree you look so happy and pretty indeed

Yeppi by jungkooksl October 10, 2021

yeppi 

A puppy. A cute one

Yeppi...cute.

yeppi by Hehe0908 March 2, 2021

Yippity Sippity 

The act of getting you drank on in a fun carefree way that makes you go yippy!

Jordan is glad that it is Friday so he is going to have a little yippity sippity this evening.

Yippity Sippity by Shemomma September 6, 2019

Yapping 

The act of speaking without discretion at length to an uninterested audience resulting in discomfort, annoyance, and/or discontent. yap derives from the annoying bark produced by small dog.
many other terms or "portmanteaus" incorporate "yapping"
Yapanese: when someone yaps so much they appear to no longer be speaking English

Yapathon: when a person yaps so extensively they could have ran 42 km or 26 miles during their tangent
Yapghanistan: to yap so much that it could be considered as an act of terrorism

Man 1: yes so my daughter just got a good VCE result i'm so proud next week the wife and I...
Man 2: okay buddy quit yapping this ain't yapghanistan here we speak English not yapanese, now beat it pal!

Yapping by Man glaser August 16, 2023

Yerpity 

A suitable substitute for "yes" "yeah" "yep" or any other synonym.

Ella, are you a procrastinator?
Yerpity!

Yerpity by Adnabi May 20, 2020

Yippitty 

The adjective form of yippee, a yippitty time is a fun and happy time during which you may have said "hooray", "this is great", or indeed "yippee!" in an excitable manner.

First we went to the park and then we had an ice cream and then we had a dance and then made silly faces, and generally had a wonderfully yippitty day,
.

Yippitty by SFPilot2 August 5, 2008