Synonym: Imperator
| Part of speech | common noun |
|---|---|
| Gender | masculine |
| Singular | Plural | |
|---|---|---|
| Nominative | Kaiser | Kaiser |
| Genitive | Kaisers | Kaiser |
| Dative | Kaiser | Kaisern |
| Accusative | Kaiser | Kaiser |
| Afrikaans | keiser |
|---|---|
| Catalan | emperador |
| Danish | kejser |
| Dutch | keizer |
| English | emperor |
| English (Old English) | casere |
| Esperanto | imperiestro |
| French | empereur |
| Italian | imperatore |
| Latin | dominus; imperator |
| Low German | keiser; keyser |
| Luxemburgish | Keeser |
| Norwegian | keiser |
| Papiamento | emperadó; emperador; imperiadó |
| Portuguese | imperador |
| Saterland Frisian | Imperator; Kaiser |
| Spanish | emperador |
| Swedish | kejsare; kejsar |
| Tagalog | emperador |
| Turkish | imparator |
| West Frisian | keizer |