| Part of speech | common noun |
|---|---|
| Hyphenation | pi·o·nir·o |
| Singular | Plural | |
|---|---|---|
| Nominative | pioniro | pioniroj |
| Accusative | pioniron | pionirojn |
| Catalan | pioner |
|---|---|
| Danish | pioner |
| Dutch | pionier; voortrekker |
| English | pioneer; engineer |
| Faeroese | slóðbrótari |
| French | pionnier |
| German | Bahnbrecher; Pionier |
| Greek | πρωτοπόρος |
| Italian | iniziatore; pioniere |
| Papiamento | pionero |
| Portuguese | bandeirante; pioneiro; precursor |
| Saterland Frisian | Boanbreeker; Pionier |
| Spanish | colonizador; gastador; vanguardista |
| Swedish | pionjär; pionär |
| West Frisian | paadsljochter |