effective
Translation
effective, successful, operative
Examples
This is a very effective way to learn.
This is a very effective way to learn.
The new law is effective immediately.
The new law is effective immediately.
Grammar Patterns
be effective in ((-ing sth.)) to be successful in doing (sth.) This method is effective in saving time.
be effective against ((sth.)) to work well against (sth.) The vaccine is effective against the virus.
Similar Words
Synonyms: efficient, productive, successful; Antonyms: ineffective, useless
Etymology
Derived from the noun 'effect'. From Latin 'effectivus'.
Memory Tips
If something has a good 'effect', it is 'effective'. The two words are closely related.