| 日本語 | jpn-000 |
| 無くてはならない | |
| English | eng-000 | absolutely necessary |
| English | eng-000 | cannot do without something |
| English | eng-000 | essential |
| English | eng-000 | have to do |
| English | eng-000 | indispensable |
| English | eng-000 | necessary |
| English | eng-000 | unavoidable |
| English | eng-000 | vital |
| にほんご | jpn-002 | なくてはならない |