This is the 18904th most frequent Korean word.
싶다던
"싶다던" means "said (they/he/she/I) wanted to" or "claimed to want to."
In this sentence, "싶다던" is used to refer back to a previously mentioned or quoted desire—specifically, the subject's past wish or aspiration to become a singer.
그는 가수가 되고 싶다던 꿈을 아직도 포기하지 않았다.
He still hasn’t given up on his dream of wanting to become a singer.
Here, "싶다던" indicates recalling a specific day or instance when the desire to go to the amusement park was stated.
그 아이는 놀이공원에 가고 싶다던 그날을 기억하고 있었다.
The child remembered the day they said they wanted to go to the amusement park.
"싶다던" here signifies referencing something the friend previously expressed about their desire to travel.