The ability to endure hardship or persist through difficulties; patience and perseverance.
長時間の勉強には相当な忍耐力が必要だ。
Long hours of studying require considerable perseverance.
この仕事は肉体的にも精神的にも忍耐力が試される。
This job tests your endurance both physically and mentally.
子育てには忍耐力が欠かせない。
Patience is indispensable in raising children.