| русский | rus-000 |
| про́чность | |
| asturianu | ast-000 | firmeza |
| català | cat-000 | fermesa |
| English | eng-000 | firmness |
| français | fra-000 | fermeté |
| Gaeilge | gle-000 | diongbháilteacht |
| Gaeilge | gle-000 | fostacht |
| Gaeilge | gle-000 | seasmhacht |
| galego | glg-000 | firmeza |
| italiano | ita-000 | fermezza |
| latviešu | lvs-000 | cietība |
| latviešu | lvs-000 | stingrums |
| latviešu | lvs-000 | stingrība |
| português | por-000 | firmeza |
| русский | rus-000 | реши́мость |
| русский | rus-000 | твёрдость |
| español | spa-000 | firmeza |