| Part of speech | common noun |
|---|---|
| Hyphenation | ag·o |
| Singular | Plural | |
|---|---|---|
| Nominative | ago | agoj |
| Accusative | agon | agojn |
| Afrikaans | handeling |
|---|---|
| Catalan | acció; acte |
| Danish | handling |
| Dutch | actie; daad; handeling; verrichting; zet; activiteit |
| English | act; action; deed; move |
| Faeroese | gerð |
| Finnish | teko |
| French | action; acte |
| German | Handlung; Tat; Tätigkeit; Aktion; Akt |
| Hungarian | cselekmény; tett |
| Italian | azione |
| Latin | actio; actum |
| Low German | akty |
| Papiamento | akshon; akto; echo |
| Portuguese | acção |
| Russian | акт |
| Saterland Frisian | Hondlenge; Doat; Aktivität |
| Spanish | acción; acto; hecho |
| Sranan | aki |
| Swahili | tendo |
| Swedish | gärning; handling |
| Thai | การ |
| Turkish | amel; hareket; iş |
| West Frisian | died |