| 必 | 반드시 필, 오로지 필, 살필 필, 기약 필, surely, most certainly; must (4) |
| 不必要- | 불필요하다 | to be unnecessary (conjugate verb) |
| 事必歸正 | 사필귀정 | In the end, things will turn out fine |
| 事必歸正 | 사필귀정 | everything will eventually find its rightful course |
| 必死 | 필사 | desperation |
| 必須 | 필수 | necessary, indispensable |
| 必須的 | 필수적 | necessary, indispensable |
| 必需品 | 필수품 | requisite |
| 必然的 | 필연적 | inevitable, necessity, necessary |
| 必然 | 필연적인 | inevitable |
| 必要 | 필요 | need, requirement,necessity |
| 必要性 | 필요성 | necessity |
| 必要- | 필요하다 | to need (conjugate verb) |
| 何必 | 하필 | why necessarily? why of all things? |