| Language | Mutually intelligible with... |
| Azerbaijani (partially) | |
| Belarusian | |
| Bulgarian (partially) | |
| Czech | |
| Dutch (partially) | |
| Estonian (partially) | |
| Finnish (partially) | |
| German | |
| Icelandic | |
| Irish (partially) | |
| Kazakh | |
| Kirundi | |
| Macedonian | |
| | Language | Mutually intelligible with... |
| Macedonian (partially) | |
| Portuguese | |
| Portuguese (partially) | |
| Russian | |
| Russian (partially) | |
| Scots (partially) | |
| Slovenian (partially) | |
| Spanish | |
| Swedish | |
| Swedish (partially) | |
| Thai | |
| West Frisian (partially) | |
|