Vocabulary.com is an easy and intelligent way to improve your English vocabulary, combining an adaptive learning system with a very fast dictionary so that you can improve your vocabulary quickly and efficiently.
Rather than make you study reams of pointless words, Vocabulary.com takes the most essential English vocabulary from a range of books, periodicals, and other material, the words that you are likely to come across when you are reading. This list serves as the basis for the learning platform.
Vocabulary.com say that their system is adaptive, like having a personal trainer in the room, monitoring your work and suggesting new words and exercises to challenge you on your level, avoiding wasting time on words that are too easy or too hard. We like this website, and so will you.