LEARN KOREAN (한국어) [GRAMMAR] #1

잘못

To make all of this even more confusing, the word 잘못 (with no space between 잘 and 못) has a different meaning. 잘못 means "mistake." This word would normally be an easy word to deal with. However, it is more difficult than it needs to be because 잘못 and 잘 못 have two different meanings. 잘못 can be used like this:

그것은 제 잘못이었어요 - That was my fault/my mistake

Normally when you say "my _____" you use 저의 or 나의. However, some nouns prefer to have 제 and 내 before them instead of 저의/나의. 잘못 is one of these nouns. Another example is 제/내 생각 (instead of 저의/나의 생각) meaning "my thought/my opinion/what I think."