| Part of speech | common noun |
|---|---|
| Hyphenation | jar·dek·o |
| Singular | Plural | |
|---|---|---|
| Nominative | jardeko | jardekoj |
| Accusative | jardekon | jardekojn |
| Afrikaans | dekade |
|---|---|
| Dutch | decennium |
| English | decade |
| French | décennie |
| German | Jahrzehnt; Dezennium |
| Greek | δεκαετία |
| Portuguese | década |
| Welsh | degawd |