| Part of speech | verb |
|---|
| Catalan | dubtar |
|---|---|
| Czech | pochybovat |
| Danish | tvivle |
| Dutch | dubben; in dubio staan; twijfelen; zijn twijfels hebben |
| English | doubt |
| Esperanto | dubi |
| Faeroese | ivast |
| Finnish | epäillä |
| French | douter |
| German | zweifeln |
| Hungarian | kételkedik; kétkedik |
| Icelandic | efa |
| Latin | addubitare; dubitare |
| Papiamento | duda |
| Polish | wątpić |
| Portuguese | duvidar; estar em dúvida; ter dúvida |
| Romanian | se îndoi |
| Russian | сомневаться; усомниться |
| Saterland Frisian | twieuwelje; betwieuwelje |
| Spanish | dudar |
| Swedish | tvivla |
| West Frisian | betwivelje; twivelje |