| Categoría gramatical | verbo |
|---|
| Modo indicativo | |
|---|---|
| Presente | Pasado |
| (he) reacts, reacteth | (he) reacted |
| (they) react | (they) reacted |
| Modo subjuntivo | |
| Presente | Pasado |
| (he) react | (he) reacted |
| (they) react | (they) reacted |
| Participios | |
| Participio presente | Participio pasado |
| reacting | reacted |
| bajo sajón | reageren |
|---|---|
| esperanto | reakcii; reagi |
| neerlandés | reageren |