| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | islanda | islandaj |
| Accusative | islandan | islandajn |
| Danish | islandsk |
|---|---|
| Dutch | IJslands |
| English | Icelandic |
| French | d’Islande; islandais |
| German | isländisch |
| Icelandic | íslenskur |
| Italian | islandese |
| Norwegian | islandsk |
| Portuguese | islândes |
| Russian | исландский |
| Spanish | islándico; islandés |
| Swedish | isländsk |