This is the 656th most frequent Korean word.
열었다
"열었다" means "opened."
To start or initiate a non-physical process, such as a discussion.
그들은 대화를 열었다.
They started a conversation.
To indicate physically opening an object like a door.
그는 문을 열었다.
He opened the door.
To metaphorically initiate or create new possibilities.