Kaj Nrig is a word from the Hmong language. It describes a very joyful, peaceful, and warm feeling. It is as if you have been enlightened and are the happiest you've ever been in your entire life. You will often hear it in love songs.
However, it's such an overwhelmingly happy feeling that it is hard to understand unless you know the Hmong language.
Txov kev sib hlub qab npaum zig, ua rau kuv lub siab nyob kaj nrig ("Love feels so sweet, it makes my heartfeel like it's enlightened." Line is from "Xav Nyob Hauv Koj Lub Xub Ntiag Tas Li" by Laj Tsawb)
A gender non-binary or gender queer person named Kajsa at birth. They go by Kaj, so as not to be confused for a tall blonde femme, a Nordic Karen, or a Swedish cartoon duck.
The type of person who is always shining and smiling. Her smile is contagious and her work ethic makes her stand out from the crown. Typically makes those around her feel loved. If you have a Huab Kaj in your life then you are especially lucky as they bring a significant amount of value to their friends and significant other's lives. They can be a bit naive at times, but they are always growing.