4D Personality

A person with a 4D personality is someone who has a unique personality, who has a different way of thinking, speaking and acting. For example, SS501’s Leader Joong is said to have a 4D personality because he models, acts, volunteers, sings and dances and says unusual and exaggerated things.

Ajumma

A term used to respectfully refer to an older woman or a middle-aged  woman who could be married. It can have negative connotations. For example, Insooni may be a veteran of the Kpop world, but you might not want to call her ajumma!

Ajusshi

A term used to refer to an older man in his thirties/forties. For example, on Hello Baby, Little Yoogeun refers to MC Kang HoDong as Ajusshi!