Indicates that an action involves more than one party or that something is done together with someone or something else.
Korean Grammar in Use
하고 can also indicate the target with which the subject performs an action and corresponds to ''(together) with'' in English. When indicating such a relationship, 같이 and 함께 normally follow the particle. 하고 is used regardless of whether a final consonant is present.
Details
Examples
어제 회사 동료<span class='focus'>하고</span> 저녁을 먹었어요.
I had dinner with my colleague yesterday.
그 사람이 싫은 건 아니고 그냥 저<span class='focus'>하고</span> 성격이 잘 안 맞는 거 같아요.
It's not that I don't like that person, but I think our personalities don't match well.
내일 친구<span class='focus'>하고</span> <span class='green'>같이</span> 영화를 볼 거예요.
I plan to see a movie (together) with my friend tomorrow.