FreeRice automatically adjusts to your level of vocabulary. It starts by giving you words at different levels of difficulty and then, based on how you do, assigns you an approximate starting level. You then determine a more exact level for yourself as you play. When you get a word wrong, you go to an easier level. When you get three words in a row right, you go to a harder level. This one-to-three ratio is best for keeping you at the “outer fringe” of your vocabulary, where learning can take place.
There are 50 levels in all, but it is rare for people to get above level 48.
So what's my point? I'm charging you with the task of either (a) getting to level fifty on the vocabulary database (a feat I only achieved with the help of the Oxford English Dictionary and half an hour of free time), or (b) answer 100 vocabulary questions correctly and donate 1,000 grains of rice to the cause. Just click the image below to go to the site and begin your harrowing quest to *dramatic pause* expand your vocabulary.

The rice you donate makes a huge difference to the person who receives it. About 25,000 people die each day from hunger or hunger-related causes, most of them children. To a mother or father watching a loved child die in their arms from hunger, the rice you donate is more precious than anything in the world.
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Yes, this is largely an advertisement that I crafted, but the vocabulary trainer is truly addictive and really quite helpful for aficionados of the language. So seriously, give it a try. Don't make me get the flying monkeys.
