훈수가 · 훈수를
unsolicited advice (orig. from a game onlooker), kibitzing
Example
옆에서 자꾸 훈수를 두지 마세요.
Please stop giving me advice from the sidelines.
Word parts
훈 teach+수 move
Literally 'teaching moves': an onlooker telling players what to play in baduk or janggi.
Good to know
The verb is 두다 or 하다: 훈수(를) 두다; it often sounds annoying, like backseat driving.
Related words