Korean slang profile
뇌피셜
noepisyeol
An opinion presented as fact
Presenting a personal idea as if it were a fact without an official basis.
- Expanded form
- 뇌 + 오피셜(official)An opinion presented as fact
- Other spellings
- —
- Earliest source found
- Oct 30, 2017
- Documented trend period
- Around 2017~
This is the earliest source we have verified, not the date the term was coined.
01Examples, with English translations
- Example by Julimmal
그거 완전 뇌피셜이잖아.
You're just presenting your own guess as fact.
- Quoted from a source
‘뇌피셜’은 ‘뇌’와 공식 입장을 뜻하는 ‘오피셜’(official)을 합성한 말이다.[1]
‘뇌피셜’ is a combination of ‘brain’ and ‘official’, which means official position.
English translation by Julimmal.
02Documented history
- October 2017The Seoul Newspaper introduced ‘뇌피셜’, a coined word that came into everyday life from SNS, and explained its meaning as a compound word of ‘brain’ and ‘official’. In a similar way, we also introduced ‘G Official’, who asserts what he heard from an acquaintance as fact.[1]
03Origin & word formation
Combines 뇌, meaning brain, with 오피셜, from “official,” referring to an official position. A 2017 Seoul Shinmun article explicitly explains this structure. Who first used it and when have not been verified.
Evidence for the origin explanationHigh
The article explicitly explains the compound's structure. Where it was first used is unknown.
04Sources
Original titles and links are preserved. An English translation does not replace the original source.
- 뇌피셜·이니굿즈·사바사… 일상으로 건너온 SNS 조어 (서울신문)Published Oct 30, 2017Original source checked Nov 5, 2026