There is no doubt about it. The best way to learn new words is to do it unconsciously. I don’t mean while you’re unconscious. I mean while you are unconscious of the fact that it is sinking in.
    That is how I learnt the 30,000 words in my vocabulary by living in an English-speaking world, mother tongue. I just pick them up. But some of them may be misunderstood. Now, to misunderstand does not mean not to understand. To misunderstand is to understand but incorrectly.
    The 5 % mislearnt of all the words we “know” will be the least frequently used words, as the more frequently used words are less likely to be mislearnt. Some of the misunderstandings may live with all our lives, without knowing that we got them wrong.
    Many English teachers think that this natural method of learning words in one’s own mother tongue can be used for a second language learning. They teach their students how to play the Guessing Game. “There is no time to look up in your dictionaries all the new words you come across,” they will say. “You have to practise guessing what the word means from the context.”
    This method of guessing in a second language learning does not work. It may succeed in many cases, but results in hundreds or thousands of wrongly-guessed meanings of words.
    And what’s more, there are more separate meanings than there are words themselves. Our learners’ dictionaries usually have many meanings. A good dictionary is what makes self-learning possible.
    Don’t guess! Look it up!