| Part of speech | adjective |
|---|---|
| Hyphenation | ferm |
| Catalan | ferm |
|---|---|
| Danish | fast |
| Dutch | gevestigd; hecht; stevig; vast |
| English | firm; solid |
| Esperanto | firma |
| Faeroese | fastur |
| Finnish | luja |
| French | ferme |
| German | fest; feststehend; firm; gediegen; stabil; widerstandsfähig; kräftig; stark; hart; beständig; Fest‐ |
| Latin | firmus |
| Luxemburgish | sécher |
| Portuguese | consistente; constante; firme |
| Saterland Frisian | dääge; fääst; fääststoundend; stabil |
| Spanish | firme; resistente; sólido |