| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | horizontala | horizontalaj |
| Accusative | horizontalan | horizontalajn |
| Dutch | horizontaal; platliggend; waterpas |
|---|---|
| English | horizontal; level |
| French | horizontal |
| German | horizontal; waagerecht; waagrecht; Horizontal‐ |
| Papiamento | horizòntal |
| Portuguese | horizontal |
| Saterland Frisian | horizontoal; woage |
| Spanish | horizontal |
| Swedish | horisontal |