The Korean slang expression “노잼” meaning “not fun” or “boring”

Title
No‑jaem – “Not fun; boring”

What No‑jaem Means
No‑jaem is a friendly, everyday slang expression that Korean speakers use to say something is not fun or simply boring. You will hear it often among friends when talking about a dull activity, an unfunny joke, or a disappointing event. It is casual and light, almost playful, even when the situation itself is not exciting.

How the Word Works
No comes from a slangy way of saying “no” or “not.”
Jaem is a shortened form of jaemi, which means “fun.”
Put them together and you get no‑jaem, a quick and easy way to say “no fun.”

Example Sentences
i yeonghwa no-jaem-iya.
This movie is boring.

geu iyagi jom no-jaem-ieosseo.
That story was a bit boring.

Final Tip
Keep no‑jaem for casual conversations with friends or people your age. It is not something you would normally use in formal settings.