Ulzzang

Aegyo 애교

A deliberately cute manner — baby-voiced talk, puffed cheeks, finger hearts, whiny charm — performed to be adorable and win someone over. It can be a personality trait ("she's full of aegyo") or an on-demand performance. Both men and women do it; male idols' aegyo is a fandom delight of its own.

Aegyo-sal 애교살

The small pouch of fat directly under the eyes that plumps up when you smile, making the eyes look bigger, younger, and friendlier. In K-beauty it's a coveted feature — the opposite of Western makeup's war on under-eye anything. People highlight it with makeup or even get fillers to create it.

Gwiyomi 귀요미

"Cutie" — an affectionate noun for an adorable person, pet, or thing. It's playful, casual slang you'd use about a friend, an idol, or a puppy. It also names the viral "Gwiyomi Song" aegyo routine.

Skinship 스킨십

Affectionate physical touch — holding hands, back-hugs, leaning on shoulders, playing with someone's hair. It covers romantic touch between couples, but also the casual same-sex physical closeness that's normal between Korean friends and idol group members. It's a Konglish word, so don't expect English speakers outside K-culture circles to know it.

Kkondae 꼰대

A condescending older person — typically a boss or senior — who lectures juniors, demands deference because of age or rank, and starts sentences with "back in my day." Think "OK boomer" energy fused with a know-it-all manager. Younger Koreans use it behind such a person's back, never to their face.

Nunchi 눈치

The subtle art of reading a room: sensing other people's unspoken moods, needs, and the social hierarchy, then adjusting your behavior before anyone has to say a word. Someone with quick nunchi (nunchi-ga ppareuda) notices the boss is irritated or a friend is hurting without being told; someone with no nunchi (nunchi-ga eopda) blunders straight through social cues. In Korea's high-context, hierarchy-aware culture it's treated as a core life skill — for getting along at work, in family, and among friends.