| Reference Language | Languages with coefficient of variation |
| Greek | French, English |
| Latin | Esperanto, Finnish, Slovak |
| Esperanto | Latin, Finnish, Czech, Slovak, Basque |
| French | Greek, English, Norwegian |
| Italian | Romanian, Spanish, Albanian, Somali, Nahuatl |
| Spanish | Italian, Romanian, Albanian, Haitian, Nahuatl |
| English | Greek, French, Norwegian |
| German | Danish, Serbian, Welsh |
| Russian | Hungarian |
| Ukrainian | Polish |