| LEGO Concepticon | art-270 |
| 2220 | |
| LWT Code | art-257 | 18.23 |
| SILCAWL | art-261 | 0442 |
| Usher-Whitehouse Concepticon | art-271 | 1162 |
| IDS Concepticon | art-272 | 18.23 |
| PanLex Union Concepticon | art-273 | 266800 |
| English | eng-000 | hush |
| English | eng-000 | quiet |
| English | eng-000 | silent |