delulu

Delulu is internet slang used primarily within online fan communities to describe a person who acts as if a romantic relationship or personal connection with a public figure, celebrity, or fictional character is real, despite little or no evidence. The term is a playful shortening of the word delusional and is typically used in a lighthearted or self-deprecating way.

Usage and forms: Delulu can function as a noun (a delulu), an adjective (delulu behavior or delulu mindset), or, less commonly, an adverb. It is commonly applied to discussions about celebrity dating rumors, shipping couples in anime or K-pop fandoms, or situations where fans read more into social media signals or interviews than is warranted. The tone ranges from joking to teasing, and it is often paired with disclaimers about being aware of fictional or hypothetical scenarios.

Etymology and spread: The word arose within online fandom culture, with no single definitive origin. It gained traction in the 2010s and has since appeared across platforms such as Twitter/X, Tumblr, Reddit, and fan forums. Its popularity stems from the blend of humor and self-awareness common in fan discourse.

Context and cautions: Delulu reflects how fans engage in imaginative speculation and ship dynamics, sometimes blurring lines between fiction and reality. While usually harmless, the term can be used to mock someone's beliefs or, when misapplied, to dismiss legitimate fan interest. It is not a clinical diagnosis and should be used with consideration for others’ feelings.