| Part of speech | common noun |
|---|---|
| Hyphenation | op·tim·ism·o |
| Nominative | optimismo |
|---|---|
| Accusative | optimismon |
| Afrikaans | optimisme |
|---|---|
| Czech | optimismus |
| Dutch | optimisme |
| English | optimism |
| Faeroese | bjartskygni |
| French | optimisme |
| German | Optimismus |
| Papiamento | optimismo |
| Portuguese | otimismo |
| Saterland Frisian | Optimismus |
| Spanish | optimismo |
| Swedish | optimism |
| Welsh | optimistiaeth |