The most popular online dictionary and thesaurus for learners of English
effective adjective ( SUCCESSFUL )
/ɪˈfek.tɪv/ adj Definition
successful or achieving the results that you want
It's an extremely effective cure for a headache.
The lighting for the production made a very effective use of shadow.
She's a very effective teacher.
Opposite: ineffective
effectiveness noun
/ɪˈfek.tɪv.nəs/ n [U] (Definition of effective adjective (SUCCESSFUL) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Browse the Dictionary
Our dictionaries
Browse the Thesaurus
More Results for “effective”
Word of the Day
prey on your mind
If a problem preys on your mind, you think about it and worry about it a lot
Blog
New Words
Find words and meanings that have just started to be used in English, and let us know what you think of them.
