Delulu

"Delulu" is internet slang for being delusional, often used playfully to describe unrealistic but harmless fantasies or overconfident beliefs.
Definition and Usage
Delulu is a shortened form of delusional, with a playful reduplication for emphasis. It is commonly used to describe someone who holds unrealistic expectations or fantasies, often in a humorous or self-aware way. For example, a fan imagining a romantic relationship with a celebrity might be called "delulu," or someone overly confident about achieving a far-fetched goal might jokingly refer to themselves as delulu
Merriam-Webster
Merriam-Webster
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. The tone is usually ironic, lighthearted, and self-aware rather than clinical
slangwise.com
slangwise.com
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.

Origins
The term originated in K-pop fandoms around 2013–2014, particularly on forums like OneHallyu, where fans would jokingly describe their parasocial relationships with idols or their hopes of meeting them as delusional
Wikipedia
Wikipedia
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. It later spread to broader social media platforms, including TikTok and Instagram, becoming popular among Generation Z and Generation Alpha
Wikipedia
Wikipedia
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. Viral phrases like "delulu is the solulu" (meaning a little delusion can help achieve your dreams) and "may all your delulu come trululu" reflect this playful, aspirational usage
Merriam-Webster
Merriam-Webster
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.

Modern Context
Today, delulu is used beyond fandoms to describe any imaginative, exaggerated, or overly optimistic belief, often in everyday life or social media posts. It can refer to romantic fantasies, career ambitions, or humorous daydreams. While it retains its playful tone, it is generally not used to describe serious mental health issues
slangwise.com
slangwise.com
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.

Examples
"I just know I’m going to marry Jungkook one day. I’m so delulu!"
"He ghosted me, but I’m going to remain delulu until he comes back."
"Applied to one job and now imagining my resignation email to my current boss—totally delulu."
In essence, delulu captures a mix of humor, optimism, and self-confidence, allowing people to acknowledge their unrealistic hopes while embracing them in a fun, communal way


Calling my statement that America will soon get tired of winning a delulu is an very strong understatement ... " Donald J. Trump