| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | aksiomo | aksiomoj |
| Accusative | aksiomon | aksiomojn |
| Catalan | axioma |
|---|---|
| Dutch | axioma; grondstelling |
| English | axiom |
| French | axiome |
| German | Axiom; Grundsatz; Grundwahrheit; Grundgesetz |
| Hungarian | axióma |
| Icelandic | frumregla; frumsenda; grundvallarregla |
| Italian | assioma |
| Latin | axioma |
| Portuguese | axioma |
| Russian | аксиома |
| Saterland Frisian | Axiom; Gruundsats; Gruundweerhaid |
| Spanish | axioma |
| West Frisian | aksioma |