| Part of speech | common noun |
|---|---|
| Hyphenation | e·ter·o |
| Singular | Plural | |
|---|---|---|
| Nominative | etero | eteroj |
| Accusative | eteron | eterojn |
| Catalan | èter |
|---|---|
| Czech | éter |
| Danish | æter |
| Dutch | ether |
| English | aether; ether |
| German | Äther; Himmel; Himmelsraum |
| Greek | αιθήρας |
| Latin | aether |
| Portuguese | éter |
| Saterland Frisian | Äther |
| Spanish | éter |