| English | eng-000 |
| negative acknowledge | |
| 普通话 | cmn-000 | 否定回答 |
| 普通话 | cmn-000 | 否定应答 |
| 普通话 | cmn-000 | 负应答 |
| English | eng-000 | NAK |
| English | eng-000 | negative acknowledge character |
| English | eng-000 | negative response |
| 日本語 | jpn-000 | 否定応答 |
| русский | rus-000 | отсутствие подтверждения приёма |