This is the 5071st most frequent Korean word.
끝없는
"끝없는" means "endless" or "infinite."
This instance uses "끝없는" to express the enduring nature of love.
그들은 끝없는 사랑으로 서로를 지지했다.
They supported each other with endless love.
Here, "끝없는" describes the quality of the effort as being continuous or perpetual.
그의 끝없는 노력으로 목표를 달성했다.
His endless efforts led to achieving the goal.
In this sentence, "끝없는" characterizes the universe as infinite.