This is the 13317th most frequent Korean word.
등록했고
"Registered" or "enrolled."
The word '등록했고' is used to indicate that the subject has enrolled in something, showing the action of enrolling followed by another action.
나는 온라인 강좌에 등록했고 수업을 시작했다.
I enrolled in an online course and started the class.
Here, '등록했고' implies that the subject has signed up or registered in a system or service, leading to active usage.
그는 새로 출시된 앱에 등록했고 지금 사용하고 있다.
He registered in the newly released app and is using it now.
In this sentence, '등록했고' denotes formal registration for an event, emphasizing the sequence of registration followed by preparation.