| Part of speech | unknown part of speech |
|---|
| Singular | Plural | |
|---|---|---|
| Nominative | komplekso | kompleksoj |
| Accusative | komplekson | kompleksojn |
| Dutch | complex |
|---|---|
| English | complex |
| German | Komplex |
| Papiamento | kompleho |
| Polish | kompleks |
| Saterland Frisian | Komplex |
| Spanish | complejo; conjunto |