An idiom is a turn of phrase which may-seem incomprehensible to someone wild is, not familiar with the language in which it is spoken. Idioms are extremely difficult and many language learners; cite them as one of the more challenging parts of thoroughly under-standing language and culture. William Shakespeare added several hundred to the English language, but countless others are constantly acquired and dropped over time. These figures of speech colours a language, making it more alive and fun to use. They are also often an important part of a national culture, which can be very alienating to people who are not from that culture.