| Part of speech | common noun |
|---|---|
| Hyphenation | re·ag·o |
| Singular | Plural | |
|---|---|---|
| Nominative | reago | reagoj |
| Accusative | reagon | reagojn |
| Afrikaans | reaksie |
|---|---|
| Czech | reakce |
| Dutch | reactie; terugslag; weerslag |
| English | reaction; response |
| French | conséquence; réaction; répercussion; réponse |
| German | Reaktion; Rückwirkung; Gegenwirkung |
| Low German | reakty; reaksioon; reaksy |
| Papiamento | reakshon |
| Polish | reakcja |
| Portuguese | reacção |
| Spanish | reacción |
| Swedish | reaktion |
| Turkish | aksitesir |
| West Frisian | reäksje |