Gen Z, K-pop stan
delulu
Meaning
- Delusional, in a fun or self-aware way.
- (noun) A person or belief that is delusional in that way.
“He thinks she’ll text back after a week of silence. He’s so delulu.”
Where it came from
A cutesy shortening of “delusional” that spread through K-pop fan Twitter around 2019 and 2020, where stans used it to describe wishful thinking about idols. It crossed into general Gen Z slang by 2023 and was added to the Cambridge Dictionary in 2025.