| Word | Reading | Meaning |
| 忍耐 | にんたい | endurance, perseverance, patience |
| 忍者 | にんじゃ | ninja (persons in feudal Japan who used ninjutsu for the purposes of espionage, assassination, sabotage, etc.) |
| 忍ぶ | しのぶ | to conceal oneself, to hide; to endure |
| 残忍 | ざんにん | cruelty, atrocity, brutality |
| 忍び込む | しのびこむ | to creep in, to steal in |
| 忍 | にん | endurance, forbearance, patience, self-restraint |
| 忍 | しのぶ | Davallia mariesii (species of fern); Lepisorus thunbergiana (species of fern); color of clothing layers under one's overcoat (light green on blue); ancient women's hairstyle; clothing patterned using the fern Davallia mariesii |
| 忍び | しのび | stealth; travelling incognito (traveling); ninjutsu; ninja; sneak theft, sneak thief; tolerance |
| 忍び寄る | しのびよる | to creep, to steal up, to draw near unnoticed |
| 堪忍袋 | かんにんぶくろ | one's store of patience |