| Part of speech | adjective |
|---|
| Catalan | llis |
|---|---|
| Danish | flad |
| Dutch | effen; gelijk; vlak |
| English | even; flat; level; smooth |
| Esperanto | ebena |
| Faeroese | javnur; slættur |
| Finnish | tasainen |
| French | plat; uni |
| German | eben; glatt; flach; Flach‐ |
| Italian | piano |
| Latin | aequus; planus |
| Low German | vlak |
| Norwegian | flat |
| Portuguese | chão; chato; plano; raso |
| Saterland Frisian | flak; glääd; ieuwen |
| Spanish | llano; plano |
| Swedish | flack; jämn |
| West Frisian | flak |