| Part of speech | common noun |
|---|---|
| Hyphenation | fen·ta·nil·o |
| Nominative | fentanilo |
|---|---|
| Accusative | fentanilon |
| Catalan | fentanil |
|---|---|
| Czech | fentanyl |
| Danish | fentanyl |
| Dutch | fentanyl |
| English | fentanyl |
| French | fentanyl; fentanyyli |
| German | Fentanyl |
| Greek | φαιντανύλη |
| Hungarian | fentanil |
| Italian | fentanil |
| Malay | fentanil |
| Norwegian | fentanyl |
| Polish | fentanyl |
| Portuguese | fentanil |
| Romanian | fentanil |
| Russian | фентанил |
| Spanish | fentanilo |
| Swedish | fentanyl |
| Thai | เฟนทานิล |
| Turkish | fentanil |
| Welsh | ffentanyl |