| Part of speech | unknown part of speech |
|---|
| Nominative | efikeco |
|---|---|
| Accusative | efikecon |
| Dutch | doeltreffendheid; efficiency; efficiëntie; rendement; werkzaamheid |
|---|---|
| English | effectiveness; efficacy |
| French | rendement |
| German | Wirksamkeit; Effektivität; Effizienz |
| Portuguese | eficácia; eficiência |
| Spanish | eficacia |