Korean slang profile

좋동

jotdong

Short for a good younger sibling or younger friend.

Expanded form: 좋은 동생좋은 동생 (a good younger sibling or younger friend)
Other spellings: —
Earliest source found: Dec 5, 2012
Documented trend period: Not verified

This is the earliest source we have verified, not the date the term was coined.

01Examples, with English translations

Example by Julimmal
힘들 때마다 도와주는 좋동이 있어서 든든해.
It’s reassuring to have a 좋동 who helps whenever things are hard.

02Documented history

2012-12-05“2012년 신어 자료집”, published by the National Institute of Korean Language, included the headword and definition.[1]

03Origin & word formation

The National Institute of Korean Language’s “2012년 신어 자료집” lists the expression and explains its meaning. It describes it as a shortened form of “좋은 동생”. Its original creator and exact date of creation have not been verified.

Evidence for the origin explanationMedium

The headword, definition, and examples of usage on PDF page 55 were directly compared. This is based on a single collection; the older article texts quoted there were not directly checked. The earliest verified date is the collection’s publication date, given on the copyright page on PDF page 70.

04Sources

Original titles and links are preserved. An English translation does not replace the original source.

2012년 신어 자료집 — PDF 55쪽 (국립국어원)Published Dec 5, 2012Original source checked Nov 14, 2026