| Part of speech | adjective |
|---|---|
| Hyphenation | e·fik·a |
| Singular | Plural | |
|---|---|---|
| Nominative | efika | efikaj |
| Accusative | efikan | efikajn |
| Dutch | afdoend; doeltreffend; effectief; efficiënt; werkdadig; werkzaam |
|---|---|
| English | effective; effectual; efficacious; decisive; efficient |
| German | wirksam |
| Italian | efficace |
| Papiamento | adekuá; adekuado |
| Portuguese | eficaz; eficiente |
| Saterland Frisian | drastisk; wierkengsful |
| Spanish | acertado; activo; adecuado; eficaz; terminante |
| West Frisian | beskiedend; ôfdwaande |