| 3817 | せい | 性 | sei | gender, sex | 2027 1209 |
| 3827 | せいかく | 性格 | seikaku | personality, character | 2027 |
| 3852 | せいしつ | 性質 | seishitsu | property, nature, disposition | |
| 3887 | せいのう | 性能 | seinoo | ability, efficiency | |
| 3895 | せいべつ | 性別 | seibetsu | sex, gender | |
| 324 | いせい | 異性 | isei | opposite sex | 2256 2027 1209 |
| 3822 | ~せい | ~性 | ~sei | 2027 | |
| 2477 | こせい | 個性 | kosei | individuality, personality | 1978 |
| ぞくせい | 属性 | zokusei | attribute, context | 1196 |