used to refer to someone who is trying their best to prove that they are more intelligent compared to others, often in a way that is annoying

영리한 사람, 잘난 체하는 사람

someone who is considered the teacher's favorite student and therefore has advantage over others in the classroom

선생님의 애 favorites, 선생님의 애완동물

used for saying that someone may appear threatening or aggressive, but their actions or behavior are not as harmful or severe as their words
used to describe a person who behaves in a very traditional and morally conservative manner
used to describe someone who continuously talks about what they are planning to do, but they never do or achieve much
a person who insists on giving advice about something even though they are not forced to do so

뒷좌석 운전사, 간섭하는 승객

a person who tries to gain the approval of important people by the means of flattery, praise, etc.

아부꾼, 아부하는 사람

used to describe a person who tends to say things that sound intimidating when in reality they are afraid to take action
to praise one's own abilities or accomplishments, often in an exaggerated way
an individual who consistently seeks to appear more clever than others in a manner that can be bothersome

똑똑이, 스위치

a person who tries hard to let others know that they always do the right thing and behave well
