This is the 2318th most frequent Korean word.
가입할
"To join" or "to sign up."
가입할 is used here to describe the intention or decision to join a group or organization.
새로운 독서 클럽에 가입할 마음이 생겼어요.
I felt inclined to join the new book club.
가입할 is used in the context of the action of joining a program, implying an advantage upon enrollment.
그 프로그램에 가입할 때 특별한 혜택을 받을 수 있어요.
You can receive special benefits when you join that program.
가입할 is used here to mean 'to sign up for' or 'to join' in relation to a membership or an account on a website.