| Answer | Crossword Clue |
|---|---|
| effectually | EFFECTUAL, successful in producing the desired effect |
| effectual | successful in producing the desired effect |
| effectiveness | The degree to which something is successful in producing a desired result; success |
| effective | Successful in producing a desired or intended result |
| effectual | (typically of something inanimate or abstract) Successful in producing a desired or intended result; effective |
| efficacious | (typically of something inanimate or abstract) Successful in producing a desired or intended result; effective |
