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A stupid fucking word that cringe people think is ‘funny.’ A short version of delusional. No, you’re not ‘delulu’ because you like a guy and say he likes you back, since you know he doesn’t. Delusional people usually don’t know they’re delusional. So, disrespectfully shut up.
Person 1: “Omgg, I’m so delulu he wants me back.”
Person 2: “Shut up you fucker, you’re not delusional.”
Delulu by razziekai July 28, 2023
a state of delusion caused by lack of sleep or food
lukey pookey is so delulu right now, he needs a nap.
delulu by lukey pookey May 17, 2023
Delulu is slang for delusional, commonly used amongst KPOP fans. Not used for the mental disorder but more calling out crazy fans. If a fan starts thinking sexually about an idol, starts writing fanfics about them is when someone would get called delusional.

An example is when fans start thinking they have a chance with a certain idol, or replace a groups official title with another is when you would call someone "delulu".

Another meaning is for people who see delusions commonly from a disorder or mental illness
Once: "Nayeon is Korea's it girl, if you say otherwise you are delulu."

blink: " BTS isn't the biggest group"
Delulu by kay♛ January 21, 2022
jake whenever he talks about sunghoon
"sunghoon is so cute i need him to #### ## ##### ############## while i ## ## #### ############# #### ## ####"
"oomf delulu..."
delulu by angelpilled October 16, 2022
Delulu is when a person gets cheated on snd stays in the relationship despite knowing they are being cheated on.
Ex: “I send you pics of me kissing other people and kissed other girls AND boys because i thought you’d like it, UwU”

Ex #2: Melissa is delulu
Delulu by lukanyan March 18, 2023
Short form of delusional. A term to criticize someone with an be unrealistic believe who hasn't thought otherwise. A person who is delulu will get very aggressive when their beliefs are challenged.
Reality Shifters are so delulu.
Delulu by ToebeanKitteh May 29, 2023