| Unikat | one of a kind |
| unikal | unique |
| Tunika | kirtle tunic |
| Unikum | original |
| unitär | unitary |
| Uni | uni ink |
| uni- | uni- |
| Tunica | tunica |
| Union | union |
| Unix | Unix |
| unisex | unisex |
| Nikud | nikud |
| Arnika | arnica leopard's bane mountain arnica mountain tobacco wolf's bane |
| Monika | Monica |
| Nike | Nike |
| Nikita | Nakita Nikita Nykita Nykyta |
| Tonika | tonic |
| Baikal | Baikal |
| Silikat | silicate |
| Duplikat | copy duplicate |