godan verb (-ku)
endure to the end; stick it out; hold out
Emphasizes persevering through hardship or difficulty until the very end. Often used with 最後まで or 苦難.
彼は最後まで苦難を耐え抜いた。
He endured the hardships to the very end.
この厳しい訓練を耐え抜
If you can stick out this tough training, you'll surely become stronger.