effective
Translation
effective, successful, producing a result
Examples
This is a very effective medicine.
This is a very effective medicine.
The new law is effective from tomorrow.
The new law is effective from tomorrow.
Grammar Patterns
((as sth.)) successful in producing a desired result This is a very effective medicine.
((from a date)) in operation from a particular time The new law is effective from tomorrow.
Similar Words
Synonyms: successful, powerful, potent; Antonyms: ineffective, useless
Etymology
From Latin 'effectivus', from 'efficere' meaning 'to accomplish'. Formed from 'ex-' (out) + 'facere' (to do/make).
Memory Tips
Think of 'having an effect'. If something is effective, it produces the desired effect.