This is the 8056th most frequent Japanese word.
守り抜く
To protect or defend until the very end.
In this sentence, 守り抜く implies maintaining and fulfilling a promise without fail till the very end, showcasing persistence.
彼は約束を守り抜いた。
He kept his promise till the end.
Here, 守り抜く conveys the act of protecting and maintaining something important over time despite challenges.
その古い家を守り抜くのは村の責務だった。
Preserving that old house was the village's responsibility.
In this context, 守り抜く means defending fundamental principles or values with determination and effort.