Sadlier-Oxford.com page provides a cool way to improve your word power.
You will be shown a word, it will remain fix on the screen. Other words will show and disappear. You will have to choose from them the word which you think is the closest in meaning of the 'fixed' word and click on the round button on the left side of thescreen. If your guess is right you will be awarded 200 points, else 100 points will be deducted. A green bar on the right will tell you how fast you were.
